Tag Archives: spacecraft

Japanese spacecraft successfully lands on the moon, but encounters an issue

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SLIM spacecraft illustration

JAXA

Japan's Smart Lander for Lunar Exploration (SLIM) has landed on the moon. Although the spacecraft is not operating perfectly, the successful landing follows a series of recent failed moon landings by governments and private spaceflight companies, and remains encouraging for international efforts to explore the moon. . With this landing, Japan will become the fifth country to land on the moon, following the United States, Soviet Union, China, and India.

The Japan Aerospace Exploration Agency (JAXA) launched SLIM in September 2023, and the spacecraft took a long orbit to the moon, circling the Earth several times to conserve fuel. It has been orbiting the moon since December, taking images of the surface and preparing for landing.

The January 19 touchdown marked the first use of a technology engineers dubbed “smart eye,” which allows SLIM to aim its landing spot with extreme precision. SLIM determined its position by comparing images from its onboard camera with data from other spacecraft orbiting the moon, then autonomously navigated to a landing site on the slopes of Sioli Crater. JAXA officials are continuing to analyze how well the targeting protocol worked.

Initial signals from SLIM suggest that the solar panels do not appear to be operational, so the spacecraft is operating on battery power for now. If spacecraft operators are unable to figure out what's wrong with the solar cells and get them working, SLIM's scientific capabilities could be hampered and its lifespan significantly shortened. According to JAXA officials, battery life is expected to be only a few hours. It's possible the spacecraft will regain solar power, but for now JAXA's priority is to return as much data as possible to Earth before its batteries run out.

As SLIM descended to the lunar surface, two small rovers, each carrying a small payload of scientific instruments, also descended. One of them is designed to bounce rather than roll on wheels, and the other is a tennis ball. He was designed by toy manufacturers to roll on the moon, with a sphere slightly smaller than a ball. The spacecraft appears to be functioning normally.

Spacecraft landing sites are potentially important. Previous observations suggest that material may have come from inside the moon during the impact that formed the crater. SLIM's scientific instruments can study these minerals to learn about the formation and evolution of the Moon. A successful landing and the scientific data collected will provide useful data for the many spacecraft scheduled to travel to the moon from around the world in the coming years.

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Source: www.newscientist.com

Juno spacecraft captures incredibly detailed image of Jupiter’s moon Io

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This image of Io was taken by the Juno spacecraft.

NASA/SwRI/MSSS

Thanks to NASA's Juno spacecraft, which passed the moon on December 30, we had the closest look at Jupiter's volcanic moon Io in decades.

Juno, which has been orbiting Jupiter since 2016, has increasingly taken images of Io's vicinity in recent months as its orbit around Jupiter changes.

This latest image was taken just 1500 kilometers above the moon's surface. In it, you can see some of Io's hundreds of towering mountains, some of which can exceed 10 kilometers in height, and their long, sharp shadows.

Io is thought to be the most volcanically active body in the solar system, with hundreds of active volcanoes. These volcanoes tend to be smaller than the largest mountains, averaging only 1 to 2 kilometers in height, and are difficult to see in images.

But by comparing the data with images from Juno's previous 56 lunar passes, astronomers are starting to understand how these volcanoes have changed over time and why they are so active. You can know.

Juno has also been exploring Jupiter's other moons, including Europa and Ganymede, collecting data and taking the closest images. NASA's Galileo spacecraft In February, Juno will again fly very close, about 1,500 kilometers above Io's surface.

Juno will fly close to Io seven more times before leaving orbit for Jupiter at the end of 2025, but that won't be the end of learning about Jupiter's moons. NASA's Europa Clipper spacecraft, scheduled to launch in October this year, is designed to fly just 25 kilometers above the surface of Europa, considered one of the most promising sites for life on Earth. This will provide important information about the mysterious inland sea. Solar system. The spacecraft is scheduled to arrive at Europa in 2030.

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Source: www.newscientist.com

China successfully sends experimental spacecraft into orbit for the third time in 2020

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BEIJING — China has successfully launched a reusable robotic spacecraft on Thursday for the third time since 2020 in a series of secret orbital test flights aimed at developing reusable technology to reduce the cost of space missions.

The unmanned spacecraft flew atop a Long March 2F rocket, the same rocket series China uses to transport astronauts into space, on Thursday at the Jiuquan Satellite Launch Center in northwestern China, state media said. It was launched in

The spacecraft will operate in orbit for a “certain period” before returning to a designated landing site in China. State media reported that reusable technology would be “validated” and space experiments carried out during the flight, but gave no other details.

of final launch The spacecraft was launched in August 2022 and returned to Earth after a 276-day orbit. Details such as what technology was tested or how high the plane flew were not disclosed. Images of the spacecraft have never been released to the public.

China’s plans for a reusable spacecraft (referred to by some as Shenlong, or “Shenron” in Chinese) coincide with a similar secret plan by the United States to fly an autonomous spacecraft known as the X-37B.

Thursday’s launch in China came hours after the launch countdown for the new rocket. X-37B SpaceX has canceled its mission for the third time this week due to weather and technical issues at NASA’s Kennedy Space Center in Florida.

A new launch date for the X-37B has not yet been announced. The X-37B was scheduled to launch for its seventh mission aboard a SpaceX Falcon Heavy rocket that can carry secret robotic spaceplanes to much higher orbits than ever before.

The Pentagon has provided few details about the mission, which will be overseen by the U.S. Space Command under the military’s National Security Space Launch Program.

But Space Force Gen. B. Chance Saltzman told reporters at an industry conference this week that he expects China to launch Shenron around the same time as the upcoming He said he expected further developments in the growing competition.

“It is no surprise that the Chinese are very interested in our spaceplanes. According to the US aerospace magazine Air & Space Force Magazine, we are very interested in theirs. ,” Saltzman said.

“These are two of the most-watched objects in orbit. It’s probably no coincidence that they’re trying to grab us at this timing and sequence.”

of Made by Boeing(Ban) The X-37B is about the size of a small bus and resembles a small space shuttle ship, and is designed to deploy a variety of payloads and conduct technology experiments on long orbital flights.

On its previous mission, the unmanned X-37B returned to Earth in November 2022 after more than 900 days in orbit.

China successfully launches reusable spacecraft for the first time September 2020 This happened after it had been in orbit for just two days.

The development of reusable spacecraft is considered important to ultimately achieving the goal of increasing the frequency of space flights and lowering the cost per mission.

Source: www.nbcnews.com

Lucy spacecraft makes a new asteroid discovery, finding another one beyond asteroid Dinkinesh

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Asteroid Dinkinesh and its orbiting asteroids

NASA/Goddard/SwRI/Johns Hopkins University APL/NOAO

NASA’s Lucy spacecraft passed the first asteroid and discovered a second asteroid at the same time. Lucy passed the small asteroid Dinkinesh on November 1, and images sent back to Earth show that Dinkinesh has an even smaller space rock orbiting it, the smallest main-belt asteroid ever observed up close. It became clear that there was.

This finding was not entirely surprising. As Lucy approached Dinkinesh over the past few weeks, the asteroid’s brightness appeared to oscillate over time, often indicating the presence of some type of satellite. But Dinkinesh’s diameter is only about 790 meters (790 meters), making it impossible to spot the satellite from Earth, and until November 1, even spacecraft were too far away to see it clearly.

During a flyby on November 1, Lucy flew just 430 kilometers (430 kilometers) from Dinkinesh at speeds of about 16,000 kilometers per hour, taking photos as it passed. These photos reveal a second, smaller asteroid in the Dinkinesh binary, this one only about 220 meters in diameter.

“We knew this would be the smallest main-belt asteroid ever seen up close.” Keith Knoll at NASA’s Goddard Space Flight Center in Maryland. statement. “The fact that it’s two makes it even more exciting. In some ways, these asteroids are similar to near-Earth asteroids. Binary Didymus and Dimorpho [NASA’s Double Asteroid Redirection Test mission] However, there are some very interesting differences that we will explore further. ”

The main purpose of the flyby was to test Lucy’s scientific equipment, especially the system that keeps it on target as it passes by at high speed, and the fact that nothing is visible in these first images suggests that the tracking system is not properly aligned. It shows that it is functioning. The remaining data from the encounter will be transmitted to Earth over the next week or so for more thorough examination by the mission’s scientists and engineers.

Now that Lucy has passed Dinkinesh and its partner asteroid, its next target is asteroid 52246 Donald Johansson, where it plans to visit in 2025 before accelerating toward Jupiter’s Trojan asteroids. The Trojan horse travels in front of and behind Jupiter as it orbits around the sun, and because it is likely a remnant left over from the formation of the solar system, it provides valuable insight into how the planet formed and evolved over time. May hold insights. Lucy she will reach the Trojans in 2027.

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Source: www.newscientist.com