Tag Archives: NASA

NASA Scientists Reveal Plan for European Clipper’s ‘Golden Record’

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NASA’s Europa Clipper spacecraft will be launched in October 2024 and will carry a triangular metal plate with a special message written on it as it heads towards Jupiter’s moon Europa.

This side of a commemorative plaque on NASA’s Europa Clipper spacecraft features the handwriting of U.S. Poet Laureate Ada Limón. Mystery Praise: Poem to Europa. Image credit: NASA/JPL-Caltech.

Measuring approximately 18 x 28 cm (7 x 11 inches), the Europa Clipper’s metal plate, made from tantalum metal, features graphic elements on both sides.

At its center is a handwritten engraving of U.S. Poet Laureate Ada Limon. Mystery Praise: Poem to Europaalong with a silicon microchip stenciled with the names of more than 2.6 million people submitted by the public.

A microchip will be the centerpiece of an illustration of a bottle inside the Jupiter system, a reference to NASA’s Message in a Bottle campaign.

The outward-facing panels feature art that emphasizes Europe’s connection to the Earth.

Linguists gathered Recording of the word “water” It is spoken in 103 languages ​​from language families around the world.

The audio file was converted into a waveform (a visual representation of a sound wave) and etched into the plate.

The waveform radiates from the symbol for “water” in American Sign Language.

Based on the spirit of Voyager spacecraft golden recordconveys sounds and images that convey the richness and diversity of life on Earth, while Europa Clipper’s multi-layered message aims to stimulate the imagination and provide a unifying vision.

“The content and design of the European Clipper vault plate is imbued with meaning,” said Dr. Lori Glaze, director of the Planetary Science Division at NASA Headquarters.

“This plate combines the best of what humanity has to offer to the entire universe: science, technology, education, art and mathematics.”

“The message of connection through water, which is essential to all forms of life as we know it, perfectly illustrates the connection between Earth and this mysterious ocean world that we seek to explore.”

In 2030, after a 2.6 billion km (1.6 billion mile) journey, Europa Clipper will begin orbiting Jupiter and make 49 close-bys to Europa.

To determine whether conditions are conducive to life, the spacecraft’s powerful suite of scientific instruments will collect data about the moon’s subsurface ocean, icy crust, thin atmosphere, and space environment.

The electronics of these devices are stored in giant metal vaults designed to protect them from Jupiter’s harsh radiation. A commemorative plate seals off the vault opening.

Because the mission is to find habitable conditions, drake equation It is also etched on the inside of the plate.

Astronomer Frank Drake developed a mathematical formulation in 1961 to estimate the possibility of advanced civilizations existing beyond Earth.

This equation has continued to inspire and guide research in astrobiology and related fields ever since.

In addition, the artwork on the inside of the plate includes references to radio frequencies that could be used for interstellar communications, symbolizing how humans use this radio band to listen to messages from space. Masu.

These particular frequencies correspond to radio waves emitted into space by water components and are known to astronomers as the “water hole.” On the plate, they are depicted as radio emission lines.

Finally, this plate includes a portrait of Ron Greeley, one of the founders of planetary science. Ron Greeley worked on the early efforts to develop the Europa mission 20 years ago, laying the foundation for the Europa Clipper.

“A lot of thought and inspiration went into the design of this plate, as did the mission itself,” said Robert Pappalardo, project scientist for Europa Clipper and a research scientist at NASA’s Jet Propulsion Laboratory. says.

“It’s been a long journey over many decades, and I can’t wait to see what the European Clipper has to show us in this world of water.”

Source: www.sci.news

New NASA Satellite Launches to Study Warming Oceans and Atmosphere

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The newest weather satellite of NASA was launched into orbit on Thursday, providing unprecedented details of the world’s oceans and atmosphere.

SpaceX launched its $948 million Pace satellite before dawn, sending its Falcon rocket south across the Atlantic Ocean to achieve a rare polar orbit.

The satellite will spend at least three years studying the ocean and atmosphere 420 miles (676 kilometers) above the Earth. Two scientific instruments scan the Earth every day. The third instrument takes monthly measurements.

The PACE (Plankton, Aerosols, Clouds, Marine Ecosystems) satellite will separate from a SpaceX rocket in orbit on Thursday.NASA (via AP)

“It will be an unprecedented view of our home planet,” said project scientist Jeremy Wardell.

The observations will help scientists better forecast hurricanes and other severe weather, better understand how the Earth is changing as temperatures rise, and better predict when harmful algae blooms will occur.

NASA already has more than 20 Earth observation satellites and instruments in orbit. But Pace's findings should provide better insight into how atmospheric aerosols, such as pollutants and volcanic ash, interact with marine life such as algae and plankton.

“The pace will give us another dimension” to what other satellites observe, said Karen St. Germain, NASA's director of Earth Sciences.

PACE (short for Plankton, Aerosol, Cloud, Ocean Ecosystem) is the most advanced mission ever launched to study marine biology.

NASA and SpaceX engineers launched NASA's PACE (Plankton, Aerosols, Clouds, and Ocean Ecosystems) spacecraft into SpaceX's Falcon 9 spacecraft on January 30 at the AstroTech Space Operations Facility near Kennedy Space Center in Florida. It is encapsulated in the payload fairing. Denny Henry/NASA (via AP)

Current Earth observation satellites can see in seven or eight colors, Werdel said. Pace displays 200 colors, allowing scientists to identify types of algae in the ocean and particles in the air.

Scientists expect to start collecting data within a month or two.

NASA is working with India to develop another advanced Earth observation satellite scheduled to launch this year. The project, named Nisar, will use radar to measure the effects of rising temperatures on the surfaces of glaciers and other melting ice.

NASA's Pace program survived despite efforts by the Trump administration to cancel it.

“It's been a long and strange journey, as they say,” Werdel said before the launch.

Source: www.nbcnews.com

Artemis moon mission delayed by NASA

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NASA’s efforts to return astronauts to the moon have been delayed once again.

The agency announced Tuesday that the next Artemis mission, which will fly four astronauts around the moon in a next-generation capsule, will launch in September 2025 instead of later this year.

A subsequent mission to actually land astronauts near the moon’s south pole is scheduled to be postponed to September 2026.

NASA said the two flights will be postponed to allow enough time to test new technology on the Orion spacecraft for the manned moon exploration mission.

“We are returning to the Moon like never before, and astronaut safety is a top priority for NASA as we prepare for future Artemis missions,” said NASA Administrator Bill Nelson. stated in a statement.

The extra time will also give the team an opportunity to complete their investigation and troubleshooting of issues that occurred during the first unmanned Artemis test flight in late 2022, NASA said. Those outstanding investigations include scrutiny of battery issues and issues with components related to the Orion capsule’s ventilation and temperature control systems, officials said.

“Artemis is a long-term exploration campaign that will conduct science on the Moon with astronauts and prepare for future human missions to Mars,” Amit Kshatriya, deputy assistant administrator for Exploration Systems Development at NASA Headquarters, said in a statement. Ta. “That means we need to get it right as we develop and fly the underlying systems so we can safely execute these missions.”

The setback comes after years of stagnation and budget overruns in the Artemis program. NASA spent more than $42 billion over more than a decade developing the new Space Launch System Mega rocket and Orion spacecraft to bring astronauts back to the moon.

Last year, NASA’s Inspector General released a report outlining challenges surrounding the Artemis program’s enormous price tag and ambitious schedule. The report estimates that each Artemis launch will cost $4.2 billion, making it difficult to continue the lunar mission alongside NASA’s other exploration goals.

The Artemis project was named after the Greek goddess who was Apollo’s twin sister. As part of this effort, NASA envisions launching regular missions to set up base camps on the moon before eventually heading to Mars.

The commercial space industry is expected to play an important role in the Artemis program. Companies such as Elon Musk’s SpaceX and Jeff Bezos’ Blue Origin are developing a variety of components and vehicles to support NASA’s efforts.

The agency is also considering awarding contracts to private companies to transport scientific experiments and equipment to the moon’s surface. One such company, Astrobotic Technology, launched a commercial lander to the moon on Monday, but shortly after launch the rover suffered a failure that would prevent it from reaching the moon’s surface, the company said. announced.

Renewed interest in the moon extends beyond NASA and the United States. India’s space agency landed a robotic spacecraft on the moon last year, and China, which already installed a lander and probe on the far side of the moon in 2019, also plans to ramp up its lunar exploration program in the coming years.

Source: www.nbcnews.com

Artemis Mission to the Moon Delayed by NASA

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NASA's Space Launch System and Artemis I Orion spacecraft at Kennedy Space Center, Florida

NASA

It looks like it will take a little longer than expected to send astronauts back to the moon. NASA has postponed the Artemis II flight, originally scheduled to orbit four astronauts around the moon in late 2024, until September 2025. The Artemis III mission, which will land astronauts on the moon for the first time since 1972, has also been postponed from its original plan. From 2025 to 2026 at the earliest.

NASA officials said in a Jan. 9 press conference that the decision was made to ensure the safety of the crew and allow time to fully test all components of the spacecraft.

“We want to emphasize that safety is our top priority…and as we prepare to send our friends and colleagues on this mission, we are committed to launching as safely as possible. “We are here,” the NASA deputy administrator said. gym free During the briefing session. “We'll leave when you're ready.”

One cause for concern was that during the test, the heat shield of the Orion spacecraft (the Artemis program's crew capsule) flared up a bit more than expected, dropping some charred debris. “This heat shield is an ablative material and is supposed to char, but it's not what we expected and some of that char will be released from the vehicle,” NASA officials said. Amit Kshatriya said during a briefing.

NASA is investigating why this happened, as well as analyzing several problems that occurred during the test, including a defect in a valve that could affect the spacecraft's life support systems. I am currently in the process of doing so. “We know how to fix it,” Kshatriya said. “All we need to do is take the time to work to the standards of workmanship we expect from a human-rated vehicle.”

Finally, there were some potential problems with the giant new Space Launch System (SLS) rocket's abort system. These are the systems that separate Orion and fly it to safety in the event of a problem with the rocket itself, so these electrical problems can be characterized and fixed before humans are on board. Especially important.

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Source: www.newscientist.com

The Hera mission to revisit an asteroid destroyed by NASA is scheduled for 2024

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Hera will soon head to the asteroid Dimorphos with CubeSats

ESA/Science Directorate

The European Space Agency (ESA) is sending a mission to find out what happened to an asteroid that NASA collided with in 2022. The Hera mission, scheduled to launch in October, will head to the asteroid Dimorphos, which NASA collided with during the Double Asteroid Redirection Test (DART). Mission.

The purpose of DART was to see if crashing a spacecraft into an asteroid would be a good way to protect Earth if one were to come our way.we know the impact Change the trajectory of Dimorphos The collisions around parent asteroid Didymos shorten each orbit by about 33 minutes, but details are not known about exactly how the collisions affected the asteroid or what happened next. do not have.

“To determine whether the impact left a crater or completely changed the shape of the asteroid, another spacecraft will need to return to the crime scene, because with the current data, either scenario is possible. That's why,” says Hera Mission Director. patrick michel At the Côte d'Azur Observatory in France. “Hera is a detective who will thoroughly investigate the effects.”

The mission consists of a main spacecraft that will fly up to 1 kilometer to Dimorphos, and two smaller cube-shaped satellites that are intended to land on the surface and see it up close. This research will not only be crucial for simulating potentially dangerous asteroids and how to deflect them in the future, but will also provide important scientific insights.

“Collisions have played an important role in the entire history of the solar system. We started the growth of planets through collisions, and all solid surfaces are full of impact craters,” Michel says. “If we're going to build a complete model of the solar system's collision history, we need to understand how these collisions work.” And it helps clarify how those conflicts work for us.

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Source: www.newscientist.com

NASA to Send Wooden Satellites Into Space for Innovative Research Purposes

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In 1957, the first man-made object was successfully launched into space and into orbit around the Earth. This was Sputnik 1, a beautifully simple Soviet spherical satellite with only four antennae.

But this historic event also marked the beginning of another, more disturbing one. It means that humans left the first space debris in orbit around the Earth.

Part of the 267-ton, 30-meter-tall rocket that launched Sputnik also became stuck in orbit. Suddenly, the world was faced with a problem we didn’t know we needed to solve: outer space littering.

Thankfully, Sputnik and the rocket debris it left behind deorbited shortly after launch and burned up in the atmosphere. However, this was not always the case. Just 66 years of space exploration has left vast amounts of detritus in orbit around Earth.

Now, NASA and the Japan Aerospace Exploration Agency (JAXA) are considering ideas to help solve this problem. The idea is to build a satellite out of wood, a widely available biodegradable material.

Space junk is currently a problem

The problems that government agencies are trying to address are big and complex, and they need to know how big the first phase of the project was. At least 130 million pieces of man-made debris are known to be orbiting the Earth, most of them flying at speeds of more than 7 kilometers per second. This is eight times faster than a normal bullet. But while this is a staggering number, some scientists believe it is a conservative estimate.

Most objects sent into space remain in space until either they deorbit and burn up on re-entry, or they are pulled away from Earth into graveyard orbits, where they orbit for hundreds of years. The majority of such objects are actually very small, less than 1 cm in diameter, from paint chips to small pieces of electronic equipment to pieces of insulation foam and aluminum.

Such tiny pieces cannot be seen from Earth, even with powerful telescopes. Therefore, we need to look for evidence left behind when it collides with other objects in space. This is no easy task.

Work to assess the scope of the problem began in earnest after five extraordinary objects, the NASA Space Shuttles, repeatedly orbited and returned. Since 1981, NASA has launched a total of 135 shuttle missions.

After each shuttle returned to Earth, it was evaluated using a fine-tooth comb to identify damage caused by orbital debris. This gives NASA a clearer picture of the problem of small pieces of dead satellites flying through space.

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NASA scientists have discovered exactly what they expected: small pieces of debris just a few millimeters in diameter can cause small but powerful impacts. NASA also produced the first estimates of how degraded the debris environment is.

Prior to 1978, NASA scientists Don Kessler and Barton Coolpare had proposed a scenario they named Kessler syndrome. The phenomenon they discussed is a catastrophic event in which when a satellite is shattered by space debris, the resulting debris destroys more satellites, creating even more debris, repeating an endless chain of events. It is a chain of

Obviously, this is a big problem. So how can we slow down the rate of debris formation or eliminate it altogether? Proposed solutions include using radiation hardening to reach space within five years of launch. It involves taking the ship out of orbit.

materials (designed to be less susceptible to damage from exposure to the high levels of radiation and extreme temperatures experienced in space) and launches on reusable rockets.

Incorporate the idea of ​​a wooden satellite. LignoSat, the name of the NASA and JAXA project, is a coffee machine built using traditional Japanese joinery techniques that houses electronics and other materials needed for space missions, much like today's CubeSats. It is a cup-sized (approximately 10x10x10cm) wooden box.

Wood samples were tested for suitability over 290 days in 2022 on the International Space Station's Kibo Japanese Experiment Module.

Magnolia coped well and performed best when exposed to intense cosmic rays and extreme temperature changes in its harsh environment. It does not burn, rot, crack, or deform, and has the important property that upon re-entry into the atmosphere, it burns up to a fine ash, leaving behind small fragments.

Lignosat prototype.Photo provided by: Kyoto University

Another advantage of wooden satellites is their reflectivity, or rather their lack of reflectivity. Currently, reflections from aluminum satellites are so bright that they can be easily spotted from Earth with the naked eye. Importantly, this reflected light can reach sensitive areas and interfere with astronomical observations.

LignoSat test launch is currently scheduled for 2024. Success could pave the way for further missions.

So will all satellites be made of wood in the near future? Unfortunately, that is unlikely. On the plus side, projects like this encourage researchers to think outside the box and can have a greater impact in the future. If LignoSat is successful, more research groups may try to introduce biodegradable materials to reduce further debris generation.

But for now, I strongly support efforts to actively track as many objects in Earth orbit as possible to reduce future collisions with matter in space.

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Source: www.sciencefocus.com

Hubble’s Holiday Globe Reveals 1 Billion Stars, Says NASA

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In this festive Hubble Space Telescope image from NASA and ESA (European Space Agency), the galaxy UGC 8091 resembles a sparkling snow globe filled with a billion stars. Credits: ESA/Hubble, NASA, ESA, Yumi Choi (NSF’s NOIRLab), Karoline Gilbert (STScI), Julianne Dalcanton (Center for Computational Astrophysics/Flatiron Institute, Washington)

Dwarf irregular galaxies are born and dazzling stars are born

Hubble’s colorful snapshots show that the universe always seems to be in the holiday spirit. The dwarf irregular galaxy UGC 8091 is a rich example. A dizzying interplay of matter and energy bubbles up to create a dazzling blue, newborn star that looks like a celebratory string of lights. They are encased in a glowing cocoon of hot pink hydrogen gas. A galaxy is a collection of about 1 billion stars. That sounds like a lot, but it’s one-hundredth of the number of stars in our adult bodies. milky way Galaxy.

This little galaxy came late to the party. The early universe was filled with dwarf galaxies, which eventually merged to form the magnificent spiral galaxies that surround us today. Seven million light-years away, UGC 8091 has only recently begun to display its glittering tapestry.

The Hubble Space Telescope is an iconic symbol of space exploration, launched into orbit in 1990. Hubble revolutionized astronomy by providing unprecedented clarity and deep views of the universe, far beyond the distortions of Earth’s atmosphere. Credit: NASA

Hubble Space Telescope presents a starry sky for Christmas

The billion stars of galaxy UGC 8091 resemble sparkling snow globes during this festival. hubble space telescope Images from NASA and ESA (European Space Agency).

The dwarf galaxy is located in the constellation Virgo, about 7 million light-years from Earth. It is considered an “irregular galaxy” because it does not have a regular spiral or elliptical appearance. Rather, the stars that make up this cluster look more like a tangle of bright string lights than a galaxy.

Some irregular galaxies are entangled due to tumultuous internal activity, while others are formed by interactions with neighboring galaxies. The result is a class of galaxies of varying size and shape, including those whose stars are diffuse and scattered.

A combination of 12 camera filters produced this image using light from the mid-ultraviolet to the red end of the visible spectrum. The red spots are likely interstellar hydrogen molecules, excited by the light from the hot, energetic star and glowing. The other sparkles you see in this image are old star combinations. A diverse array of distant galaxies appears in the background, captured by Hubble’s sharp field of view.

The data used in this image was taken by Hubble’s Wide Field Camera 3 and Advanced Survey Camera from 2006 to 2021.

Among other things, the observing program involved in this image sought to investigate the role that dwarf galaxies billions of years ago played in reheating hydrogen that had cooled after the universe expanded. big bang.

Astronomers are also studying the composition of dwarf galaxies and their stars to uncover evolutionary connections between these ancient galaxies and more modern galaxies like ours.

The Hubble Space Telescope is an international cooperation project between the two countries. NASA And ESA. NASA’s Goddard Space Flight Center in Greenbelt, Maryland, manages the telescope. The Space Telescope Science Institute (STScI) in Baltimore, Maryland, conducts science operations for Hubble and Webb. STScI is operated for NASA by the Association of Universities for Astronomical Research in Washington, DC.

Source: scitechdaily.com

For the First Time, NASA Unveils World Map of Earth’s Surface Minerals

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NASA’s EMIT has produced the first global map of hematite, goethite, and kaolinite in the dry regions of Earth using data from the year ending November 2023. The mission collected billions of data measurements of three different minerals along with seven minerals that could impact climate when released into the air. The mission, EMIT, aims to provide a detailed map of the mineral composition of Earth’s dust source regions, which can help scientists model the impact of fine particles on climate change.

EMIT launched to the International Space Station in 2022, will be launched by NASA’s Jet Propulsion Laboratory and surveys the Earth’s surface from approximately 250 miles in the air. The mission captures high-resolution images to create detailed maps of surface composition and is capable of detecting plumes of methane and carbon dioxide emitted by various human activities. EMIT’s data will be used to improve climate models and study the effects of dust on global ecosystems, including its impact on phytoplankton blooms and the transport of essential nutrients over long distances.

In addition to tracking the 10 major minerals as part of its primary mission, EMIT’s data also tracks other minerals, vegetation types, snow and ice, and even humans at or near the surface. The instrument was selected from NASA’s Earth Venture Instrument-4 public offering and is managed by the California Institute of Technology in Pasadena, California. The data collected by EMIT is publicly available for use by other researchers and the public at the NASA Land Processes Distributed Active Archive Center.

Source: scitechdaily.com

NASA Transmits Cat Video 31 Million Kilometers into Space

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Video of cat Taters chasing laser light sent from space

NASA

NASA has broken its own record by transmitting ultra-high-definition video from deep space to a distance of 31 million kilometers. The video was not of a distant celestial body or spaceship, but of a cat called Tater chasing the light from a laser pointer.

Abhijit Biswas NASA’s Jet Propulsion Laboratory (JPL) speaks new scientist Taters were selected for the first transmission at that distance.
first television test broadcast Also featured was a cat, Felix, a cartoon feline. Lasers He says the inclusion of his pointers is a visual reflection of the use of lasers in transmission.

“Apparently this cat really likes chasing laser pointers, and somehow it all came together in this video,” Biswas said.

The 15-second video was sent by NASA.
Deep Space Optical Communications (DSOC) The experiment was carried out aboard the Psyche spacecraft, which was launched in October to intercept the asteroid of the same name.

DSOC is really a proof of concept and I hope everyone believes that this can be done. This technology is already being used to transmit data between the Moon and Earth, but only over a distance of 384,400 kilometers. He said it should be possible to test longer distances than the Taters test in the future.

One problem is making sure the laser light is aimed precisely at the receiving station. “It’s a very narrow beam. At the distance Psyche is now, it [is] just a few hundred kilometers [wide by the time it reaches Earth]” says Biswas. “So if you take the slightest turn, you’ll end up in the Pacific Ocean or somewhere else. You’ll miss it completely. So there was a lot of anxiety about that.”

The video was transmitted at near-infrared wavelengths by a laser transceiver and took 101 seconds to travel from the spacecraft to Earth. The 267 Mbit/s message was received by the following equipment:
hale telescope After being filmed at Palomar, it was transmitted via the Internet to JPL in Southern California, where the video was played in real time. This data rate makes DSOC faster than most national broadband connections.

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Source: www.newscientist.com

NASA makes “Christmas tree clusters” come alive

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The Christmas Tree Cluster, NGC 2264, is a young star cluster in the Milky Way galaxy, about 2,500 light-years from Earth. Enhanced by specific color selection and rotation, this composite image depicts these stars of varying sizes as part of a cosmic Christmas tree. Credit: X-ray: NASA/CXC/SAO. Optics: TA Rector (NRAO/AUI/NSF and NOIRLab/NSF/AURA) and BA Wolpa (NOIRLab/NSF/AURA). Infrared: NASA/NSF/IPAC/CalTech/University of Massachusetts. Image processing: NASA/CXC/SAO/L.Frattare & J. Major

NGC 2264, also known as the “Christmas Tree Cluster,” milky way depicted with a new enhanced image to resemble a cosmic Christmas tree.

  • NGC 2264 is a cluster of young stars that has been colored and rotated to emphasize its nickname, the “Christmas Tree Cluster.”
  • This composite image includes X-rays from Chandra (blue and white), optical data from WIYN (green gas), and infrared data from 2MASS (white star).
  • The stars in this cluster are between 1 and 5 million years old, while the Sun is 5 billion years old.
  • Young stars are volatile and produce strong flares of X-rays and other types of light, but not in the coordinated way shown in the animation.

A cosmic Christmas tree: NGC 2264’s starscape

This new image of NGC 2264, also known as the “Christmas Tree Cluster,” shows the shape of a cosmic tree with a glow of starlight. In fact, NGC 2264 is a cluster of young stars, about 1 million to 5 million years old, located in the Milky Way about 2,500 light-years from Earth. The stars in NGC 2264 are smaller and larger than the Sun, ranging from those with masses less than a tenth of the Sun’s mass to those containing about 7 solar masses.

Festive composite image: color and rotation

This new composite image enhances the resemblance of a Christmas tree through color and rotation choices. The blue and white light (flashing in the animated version, see video below) is a young star that emits X-rays, and the X-rays are detected. NASAChandra X-ray Observatory. Optical data from his National Science Foundation-supported WIYN 0.9-meter telescope at Kitt Peak shows gas nebulae in green star clusters that correspond to the “pine needles” of trees. Finally, the infrared data from the Two Micron All Sky Survey shows foreground and background stars as white. The image has been rotated 160 degrees clockwise from astronomers’ standard north-up orientation, so the tops of the trees appear to be toward the top of the image.

This composite image shows a Christmas tree cluster. The blue and white light (blinking in the animated version of this image) is her X-ray-emitting young star detected by NASA’s Chandra X-ray Observatory. Optical data from the National Science Foundation’s WIYN 0.9-meter telescope at Kitt Peak shows gas in the nebula in green, corresponding to the “pine needles” of trees, and infrared data from the 2-micron all-sky survey shows foreground and background shows the stars. White. The image has been rotated about 160 degrees clockwise with astronomers’ standard of north at the top, so the tops of the trees appear to be near the top of the image.

Star dynamics and observation techniques

Young stars like NGC 2264 are highly volatile, causing strong flares in X-rays and other types of fluctuations seen in different wavelengths of light. However, the coordinated blinking variation shown in this animation was done artificially to emphasize the position of the star seen in the X-rays and to emphasize the resemblance of this object to a Christmas tree. . In reality, the changes in the stars are not synchronized.

The fluctuations observed by Chandra and other telescopes are caused by several different processes. Some of these are associated with activity involving magnetic fields, such as flares like those experienced by the Sun (but much more powerful), and hot spots and spots on the star’s surface that move in and out of view as the star rotates. dark areas etc. Other possibilities include changes in the thickness of the gas obscuring the star, and changes in the amount of material falling onto the star from the surrounding gas disk.

NASA’s Marshall Space Flight Center manages the Chandra program. The Smithsonian Astrophysical Observatory’s Chandra X-ray Center manages scientific operations from Cambridge, Massachusetts and flight operations from Burlington, Massachusetts.

Source: scitechdaily.com

Future NASA Moon Landings to Feature International Astronauts

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International astronauts will join U.S. astronauts on the moon by the end of this decade under an agreement announced Wednesday by NASA and the White House.

The news came as Vice President Kamala Harris convened a meeting of the National Space Council in Washington, the third such meeting under the Biden administration.

There was no word on who the international moonwalker would be or what country he would represent. A NASA spokesperson later said the crew will be assigned to a location close to the lunar landing mission, and no commitments to other countries have been made yet.

NASA has been sending international astronauts on space trips for decades. Canadian Jeremy Hansen About a year from now, it will fly around the moon with three American astronauts.

Another crew member will actually land. This will be the first landing by astronauts on the moon in more than half a century. According to , it is unlikely to happen before 2027. U.S. Government Accountability Office.

All 12 moon walkers on NASA’s Apollo program in the 1960s and 1970s were U.S. citizens. The space agency’s new moon exploration program is named Artemis, after the mythical twin sister of Apollo.

Including international partners is “not only deeply appreciated, but also urgently needed in today’s world,” Hansen told the board.

NASA has long emphasized the need for global cooperation in space, and in 2020 established the Artemis Accords with the U.S. Department of State to promote responsible behavior not only on the moon but everywhere in space. Representatives from all 33 countries that have signed the agreement so far are expected to attend the Space Council meeting in Washington.

“We know from experience that cooperation in space pays off,” Secretary of State Antony Blinken said, citing the Webb Space Telescope, an effort between the United States, Europe and Canada, as an example.

Notably absent from the Artemis Accords are Russia and China, the only countries other than the United States that have sent their citizens into orbit. Russia is her NASA partner on the International Space Station, along with Europe, Japan and Canada. Even in the early 1990s, the Russian and U.S. space agencies collaborated on a shuttle program to launch each other’s astronauts to Russia’s former orbiting Mir base.

At Wednesday’s meeting, Harris also announced new policies to ensure the safe use of space as more private companies and nations take to the skies. The problems the United States is trying to solve include the climate crisis and the growing amount of space junk on Earth. Russia’s anti-satellite missile tests in 2021 added more than 1,500 pieces of potentially dangerous orbital debris, prompting Blinken to join other meetings and urge all countries to conduct such destructive tests. I asked them to cancel it.

Source: www.nbcnews.com

NASA schedules live coverage of SpaceX Dragon departure from space station on Wednesday

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The SpaceX Dragon Cargo Mission

The SpaceX Dragon cargo ship approaches the International Space Station while orbiting 461 miles above Indonesia’s sub-sea coastline on the company’s 29th commercial resupply mission to NASA. Credit: NASA

After a series of delays due to bad weather, NASA and SpaceX are currently targeting until 5:05 p.m. EST Wednesday, Dec. 20, for the company’s 29th Dragon Commercial Supply Service Mission undocking from the International Space Station (ISS). The integrated team continues to assess weather conditions as the cold front passes through the splashdown zone off the coast of Florida to determine optimal opportunities for autonomous shore departure. Coverage of Wednesday’s Dragon departure begins at 4:45 p.m. on the NASA+ streaming service, NASA app, NASA Television, YouTube, and the agency’s website. Learn how to stream NASA TV through various platforms including social media. After re-entering the atmosphere, the spacecraft will fly off the coast of Florida, but the event will not be broadcast on NASA TV.

The SpaceX Dragon cargo spacecraft, developed by SpaceX, represents a major advancement in commercial spaceflight. The spacecraft is designed to transport cargo to the International Space Station (ISS) and return cargo to Earth. The Dragon spaceship has two versions: Cargo Dragon and Crew Dragon (Dragon 2). Cargo Dragon, in particular, is an unmanned vehicle that plays a key role in resupply missions. The Dragon spacecraft is known for its ability to carry critical payloads, with a pressurized capsule for sensitive scientific experiments and an unpressurized “trunk” for additional cargo. It is one of the few spacecraft capable of returning to Earth large amounts of cargo essential for ISS research and experiments. Due to Dragon’s versatility and reusability, it plays a critical role in maintaining a continuous flow of supplies and scientific research within the ISS.

The International Space Station (ISS) is a marvel of modern space technology and international cooperation. As the Space Environment Research Institute, scientific research is conducted in areas such as astrobiology, astronomy, meteorology, and physics. The ISS is a joint project with NASA, Roscosmos (Russia), JAXA (Japan), ESA (Europe), and CSA (Canada). The ISS, which orbits the Earth approximately every 90 minutes, serves as a microgravity and space environment laboratory where crew members conduct experiments in fields such as biology, human biology, physics, astronomy, and meteorology. The space station is also suitable for testing spacecraft systems and equipment needed for long-term missions to and from the moon and Mars. The ISS has been continuously occupied since November 2000 and represents the pinnacle of human achievement, both in terms of international cooperation and humanity’s continued presence in space.


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NASA revives scientific endeavors in light of gyro challenge

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Hubble drifts over Earth after being released by the crew of the Space Shuttle Atlantis on May 19, 2009. Service Mission 4 (SM4), the fifth visit by astronauts to the Hubble Space Telescope, was an undisputed success, with the crew performing all planned tasks during the five spacewalks. . Credit: NASA

Following the gyroscope issue, NASA successfully resumed scientific activities in hubble space telescopethe system works optimally.

NASA returned the agency’s Hubble Space Telescope to scientific operations on December 8th. The telescope temporarily suspended scientific observations on November 23 due to a problem with one of its gyros. The spacecraft is in good health and operating again using all three of her gyros.

NASA has decided to return the agency’s Hubble Space Telescope to science operations after a series of tests to determine the performance of the gyro that caused the spacecraft to suspend scientific operations.

After analyzing the data, the research team determined that scientific activities could resume under the control of the three gyros. Based on the performance observed during testing, the team decided to operate the gyro in a higher precision mode during scientific observations. Hubble’s instruments and the observatory itself remain stable and healthy.

Hubble’s two primary cameras, Wide Field Camera 3 and Advanced Survey Camera, resumed scientific observations on December 8th. The team plans to restore operation of the Cosmic Origins Spectrograph and Space Telescope Imaging Spectrometer later this month.

Hubble orbits more than 300 miles above Earth as seen from the Space Shuttle. Credit: NASA

About the Hubble Space Telescope

Launched in 1990, the Hubble Space Telescope is a wonder of modern astronomy, orbiting Earth and capturing unprecedented views of the universe. Unlike ground-based telescopes, Hubble operates above the distortions of Earth’s atmosphere, providing clear images of distant galaxies, nebulae, and other celestial phenomena.

Its discoveries have revolutionized our understanding of the universe, from understanding the universe’s accelerating expansion to capturing the most detailed view of the solar system’s planets. Hubble’s longevity and adaptability have made it one of the most important instruments in the history of astronomy, and it continues to push the frontiers of our cosmic knowledge.

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NASA captures starscape as Sun releases powerful X2.8 flare

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NASA’s Solar Dynamics Observatory

NASA’s Solar Dynamics Observatory (SDO) captured this image of a solar flare on December 14 (as seen by the bright flash in the top right).

This image shows a subset of extreme ultraviolet light that highlights the very hot material within the flare, color-coded teal. Credit: NASA/SDO

NASA observed a significant X2.8 solar flare on December 14, 2023, with potential impacts on Earth’s technological systems. NOAASpace Weather Forecast Center.

The sun emitted a strong solar flare, reaching its peak at 12:02 p.m. EST, December 14, 2023. NASA’s Solar Dynamics Observatory, which constantly monitors the Sun, captured images of the event.

A solar flare is a powerful explosion of energy. Flares and solar eruptions can affect radio communications, power grids, and navigation signals, posing a danger to spacecraft and astronauts.

This flare is classified as an X2.8 flare. The X class indicates the most powerful flare, and the numbers provide more information about its strength.

Solar flares like this one, captured by NASA satellites orbiting the sun, emit large amounts of radiation. Credit: NASA

Solar flares are intense bursts of radiation emitted from the release of magnetic energy associated with sunspots. These are among the most powerful phenomena in the solar system and can have significant effects on Earth’s space environment.

These flares are classified according to their intensity. The classification is as follows.
X class flare: The most intense flare. They can cause global radio interference and long-term radiation storms that can affect satellites and astronauts. X-class flares are further classified by number, with higher numbers indicating more powerful flares. For example, an X2 flare is twice as strong as an X1 flare and four times as strong as an X0.5 flare.
M class flare: Medium intensity flare. In polar regions, it can cause short-term radio interference and small radiation storms. While not as powerful as an X-class flare, they can still have a noticeable impact on Earth’s space weather.
C class flare: These are small flares that have little noticeable impact on Earth. These are more common than M-class and X-class flares, but are usually too weak to significantly affect space weather.
B class and A class flares: These are even smaller flares and are often undetectable without specialized solar observation equipment. They have minimal, if any, impact on the planet.

This classification is based on the peak luminous flux (number of photons) in watts per square meter measured in Earth’s orbit by the GOES spacecraft. This system allows you to quickly and easily communicate the strength of solar flares and their potential impact on space weather and Earth.

Artist’s concept for the Solar Dynamics Observatory (SDO). Credit: NASA/Goddard Space Flight Center Conceptual Image Lab

NASA’s Solar Dynamics Observatory

NASA’s Solar Dynamics Observatory (SDO) is a pivotal mission in the study of the Sun, playing a key role in understanding our closest star. Launched on February 11, 2010, SDO is specifically designed to observe and understand solar activity that influences weather on Earth and in space.

The primary goal of SDO is to better understand the Sun’s influence on Earth and near-Earth space by studying the solar atmosphere simultaneously at small space and time scales and at many wavelengths. This is very important for understanding the influence of the Sun on the Earth, especially the magnetic field and the space environment.

The SDO is equipped with a range of advanced equipment. The Atmospheric Imaging Assembly (AIA) acquires high-resolution images of the solar atmosphere, the Solar Seismic and Magnetic Imager (HMI) studies the solar magnetic field and the dynamic motion of the Sun’s interior, and the Extreme Ultraviolet Fluctuations Experiment (EVE) studies the solar magnetic field. Measure. UV output.

One of SDO’s most important contributions is its ability to continuously observe the Sun in detail at multiple wavelengths. These observations provide a comprehensive view of solar activity, including flares, coronal mass ejections, and changes in the solar magnetic field. Data from SDO has helped advance our understanding of the Sun’s complex and dynamic magnetic field, its energy output, and how these factors interact to drive space weather.

In summary, NASA’s Solar Dynamics Observatory is a key asset in solar science, providing valuable data that helps scientists better understand the behavior of the Sun and its effects on space weather and Earth.


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NASA conducts swarm experiment with Starling CubeSats

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NASA’s Starling mission will test new technologies for autonomous swarm navigation on four CubeSats in low Earth orbit.Credit: NASA Ames Research Center

NASAThe four Starling spacecraft, Blinky, Pinky, Inky, and Clyde, have successfully completed commissioning and are now in group experiment configuration. The spacecraft successfully completed several mission activities aimed at advancing satellite constellation technology.

Payload commissioning was delayed due to several anomalies that the team had to investigate.
GPS Satellite data is included more than expected at the spacecraft-to-payload interface. Software updates have resolved most of these issues and the CubeSat has begun its planned work.

Starling’s mission will include network communications between spacecraft, maintaining relative navigation and understanding each satellite’s position, autonomous swarm reconfiguration and reconfiguration to ensure the swarm can adapt as it moves as a group. It includes four main features of decentralized scientific autonomy: maintenance, and proving the ability to coordinate experiments. own activities.

NASA’s six-month Starling mission will use a team of four CubeSats in low-Earth orbit to test technologies that allow spacecraft to operate synchronously without using resources from the ground. This technology will advance capabilities in swarm maneuver planning and execution, communications networking, relative navigation, and autonomous coordination between spacecraft. Credit: NASA/Conceptual Image Lab/Ross Walter

NASA’s Starling Mission

NASA’s Starling mission represents a significant advance in the field of satellite technology. The mission features a group of small satellites named Blinky, Pinky, Inky, and Clyde, known as CubeSats. These CubeSats are designed to operate in swarms and demonstrate advanced concepts in autonomous satellite interaction.

The main objectives of the Starling mission are:

  1. Network communication: CubeSats have the ability to communicate with each other, forming complex networks in space. This allows for coordinated activities and data sharing between satellites.
  2. Relative navigation: A key feature of this mission is that each CubeSat can accurately understand its position relative to other CubeSats. This ensures precise maneuvering and positioning within the swarm.
  3. Autonomous Swarm reconfiguration: Satellites can autonomously reconfigure their positions within the swarm. This capability is critical to adapting to varying mission requirements and maintaining optimal formation during operations.
  4. Autonomy of decentralized science: CubeSats can independently coordinate experimental activities. This feature indicates the potential for future space missions to adapt and respond to environmental changes and mission objectives without requiring direct intervention from Earth.

Through these innovative CubeSats, the Starling mission aims to improve the understanding and capabilities of satellite constellation technology and potentially revolutionize the way we approach space exploration and satellite operations.

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NASA Solves OSIRIS-REx Parachute Issue

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OSIRIS-REx collected a half-pound sample from the surface of the asteroid Bennu in October 2020. The mission’s sample return capsule landed at the ministry on September 24 with the help of a parachute, similar to the training model shown in the August 30 test. The Defense Force’s Utah Test and Training Range is located in the desert outside of Salt Lake City.Credit: NASA/Keegan Barber

NASA‘s osiris rex Despite a minor issue with parachute deployment due to mismatched wiring labels, we successfully returned the sample from Bennu. The main parachute compensated and ensured a safe landing, and further investigation is planned to confirm the cause.

NASA’s OSIRIS-REx sample return capsule parachuted into the Utah desert on September 24, 2023, safely delivering a container of rocks and dust collected from the near-Earth asteroid Bennu. Although the delivery was successful, the landing sequence did not go completely to plan and the small parachute, known as a drogue, did not deploy as expected.

After a thorough review of the descent video and the capsule’s extensive documentation, NASA concluded that due to inconsistent definitions of wiring labels in the design plans, engineers were unable to wire the parachute release trigger and deploy the drogue chute. It was discovered that the signals may have been fired out of order.

A sample return capsule from NASA’s OSIRIS-REx mission is seen shortly after landing in the desert at the Defense Department’s Utah Test and Training Range on September 24, 2023. The sample was collected from asteroid Bennu by NASA’s OSIRIS-REx spacecraft in October 2020.Credit: NASA/Keegan Barber

The drogue was expected to deploy at an altitude of approximately 100,000 feet. This was designed to slow and stabilize the capsule during its approximately five-minute descent before deploying the main parachute at an altitude of approximately 10,000 feet. Instead, a signal activated the system at 100,000 feet, which separated the drogue while it was still stuffed into the capsule. When the capsule reached an altitude of 9,000 feet, the drogue deployed. The holding cord had already been severed, so the drogue was quickly released from the capsule. The main parachute deployed as expected and its design was robust enough to stabilize and slow the capsule, allowing him to land safely more than a minute earlier than expected. There were no adverse effects on OSIRIS-REx’s Bennu sample as a result of the unexpected drogue deployment.

In the design plans for the system, the word “main” was used contradictoryly between the device transmitting the electrical signal and the device receiving the signal. On the traffic light side, “main” means the main parachute. In contrast, on the receiver side, “main” was used to refer to the fireworks that would be ignited to release the cover of the parachute’s canister and deploy the drogue. Technicians connected his two main power sources, causing the parachute’s deployment motion to occur out of order.

To confirm the root cause, NASA plans to test the system that releases the parachute. This hardware is currently in one of his glove boxes containing Bennu samples at NASA’s Johnson Space Center in Houston. Once the on-site curation team completes processing the sample material (the mission’s top priority at this point), NASA engineers will be able to access the parachute’s hardware to examine the cause.

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The Surprising Role of NASA in Tackling the Climate Crisis

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Flaring, the deliberate burning of excess natural gas into the atmosphere, is one way methane is released from oil and gas facilities. His EMIT mission for NASA, over more than a year of operation, demonstrated its proficiency in discovering methane and other greenhouse gas emissions from space.

Since its launch 16 months ago, the EMIT imaging spectrometer has international space station demonstrated the ability to detect more than just surface minerals. More than a year after first detecting a methane plume from its perch on the International Space Station (ISS), data from NASA’s EMIT instrument is now being used to analyze greenhouse gas emissions with a level of proficiency that surprised even its designers. used to identify source emissions.

EMIT‘s mission and capabilities

EMIT, which stands for Earth Surface Mineral Dust Source Investigation, was launched in July 2022 to map 10 major minerals on the surface of the world’s arid regions. Mineral-related observations are already available. researcher and the general public to better understand how dust in the atmosphere affects the climate.

Methane detection was not part of EMIT‘s primary mission, but the instrument’s designers expected the imaging spectrometer to have that capability. More than 750 sources of emissions have been identified since August 2022, some of which are small, located in remote areas, and persistent over long periods of time, according to a new study published in the journal However, this device is said to have achieved more than sufficient results in that respect. scientific progress.

EMIT identified a cluster of 12 methane plumes within a 150 square mile (400 square kilometer) area in southern Uzbekistan on September 1, 2022. The instrument captured this cluster, which the researchers call a “scene,” in a single shot.

Credit: NASA/JPL-California Institute of Technology

Methane emissions and climate change

“We were a little cautious at first about what this device could do,” said Andrew Thorpe, a research engineer on the EMIT science team. NASAis a researcher at the Jet Propulsion Laboratory in Southern California and the paper’s lead author. “It exceeded our expectations.”

Knowing where methane emissions are coming from gives operators of landfills, agricultural sites, oil and gas facilities, and other methane-producing facilities the opportunity to address methane emissions. Tracking human methane emissions is key to limiting climate change because it provides a relatively low-cost and rapid approach to reducing greenhouse gases. Methane remains in the atmosphere for about 10 years, during which time it traps heat up to 80 times more strongly than carbon dioxide, which remains for centuries.

When strong winds kick up mineral rock dust(such as calcite or chlorite) on one continent, the airborne particles can travel thousands of miles and impact an entirely different continent. Airborne dust can heat or cool the atmosphere and the ground. This heating or cooling effect is the focus of NASA’s Earth Surface Mineral Dust Source Investigation (EMIT) mission.

Credit: NASA/JPL-California Institute of Technology

amazing results

EMIT has proven effective in detecting both large-scale sources (tens of thousands of pounds of methane per hour) and surprisingly small sources (hundreds of pounds of methane per hour). It has been. This is important because it will allow us to identify more “superemitters,” or sources that produce a disproportionate share of total emissions.

A new study documents how EMIT was able to observe 60% to 85% of the methane plumes typically seen during airborne operations, based on the first 30 days of greenhouse gas detections.

On September 3, 2022, EMIT detected a methane plume emitting approximately 979 pounds (444 kilograms) per hour in a remote corner of southeastern Libya. This is one of the smallest sources ever detected by this instrument.

Credit: NASA/JPL-California Institute of Technology

Comparison with airborne detection

From thousands of feet above the ground, an aircraft’s methane detection equipment is more sensitive, but researchers need advance notice that they will detect methane before the aircraft can be dispatched. Many areas are not explored because they are considered too remote, too dangerous, or too expensive. Furthermore, actual campaigns cover a relatively limited area over a short period of time.

EMIT, on the other hand, will collect data from a space station at an altitude of about 400 kilometers, covering a wide area of ​​the Earth, especially the arid region between 51.6 degrees north and 51.6 degrees south latitude. The imaging spectrometer produces a 50-mile-by-50-mile (80-kilometer-by-80-kilometer) image of the Earth’s surface (researchers call it a “scene”), including many areas that could not be reached with airborne instruments. capture.

“The number and size of methane plumes that EMIT has measured around our planet is astonishing,” said Robert O. Green. JPL Senior Researcher and Principal Investigator at EMIT.

NASA EMIT

We created this time-lapse video showing the International Space Station’s Canadarm2 robotic arm moving NASA’s EMIT mission outside the station. The Dragon spacecraft was launched…

Posted by NASA EMIT on Wednesday, October 26, 2022

Detection by scene

To help identify sources, the EMIT science team created maps of methane plumes and identified them as Websitethe underlying data are available at the NASA and U.S. Geological Survey Joint Land Processes Distributed Active Archive Center (LPDAAC). Data from this mission will be available to the public, scientists, and organizations.

EMIT began collecting observations in August 2022 and has since recorded more than 50,000 scenes. The instrument discovered clusters of emission sources in little-studied areas. Southern Uzbekistan On September 1, 2022, we detected 12 methane plumes totaling approximately 49,734 pounds (22,559 kilograms) per hour.

Additionally, the instrument detected a much smaller plume than expected.captured in a secluded corner Southeastern Libya On September 3, 2022, one of the smallest sources to date was emitting 979 pounds (444 kilograms) per hour, based on local wind speed estimates.

Reference: “Attribution of Individual Methane and Carbon Dioxide Sources Using EMIT Observations from Space” Andrew K. Thorpe, Robert O. Green, David R. Thompson, Philip G. Brodrick, John W. Chapman, Clayton D. Elder, Itziar, Iraklis-Leuchert, Daniel H. Cusworth, Alana K. Ayasse, Riley M. Duren, Christian Frankenberg, Louis Gunter, John R. Warden, Philip.・E. Dennison, Dar A. Roberts, K. Dana Chadwick, Michael L. Eastwood, Jay E. Farren and Charles E. Miller, November 17, 2023, scientific progress.

DOI: 10.1126/sciadv.adh2391

EMIT mission details

EMIT was selected from the Earth Venture Instrument-4 public offering by NASA’s Science Mission Directorate’s Earth Sciences Division and was developed at NASA’s Jet Propulsion Laboratory, managed for NASA by the California Institute of Technology in Pasadena, California. Data from this instrument is publicly available for use by other researchers and the public at the NASA Land Processes Distributed Active Archive Center.

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