Delivery Robots Are on the Horizon: Insights from Skype Co-Founder on His Fastest Venture, Starship

cResidents globally have adapted to take-out food and speedy grocery deliveries. However, many are still getting accustomed to seeing a robot arrive at their doorstep. Ahti Heinla, co-founder of Skype, is determined to change that with his new endeavor.

Heinla is the CEO of Starship Technologies, a startup he asserts is more cost-effective than using human delivery drivers, particularly in smaller towns and villages where delivery had previously been impractical.

“We addressed every challenge that existed,” Heinla remarked while having lunch at a London hotel. “You can mark the year and the months, but it’s clear: this will happen.”

Residents in Manchester, Leeds, Cambridge, and Milton Keynes in the UK, along with those in Estonia and Finland, have already begun receiving their food and groceries via these robots. They are becoming increasingly mainstream, even attending garden parties at 10 Downing Street and featuring in episodes of popular shows. Starship has executed 8 million deliveries with just 200 employees, aiming to expand significantly.

Heinla, having already made substantial profit from co-founding a company that became a household name, speaks of his ambition with enthusiasm.

In 2000, Heinla worked with Niklas Zennström, a video game developer and Skype co-founder, and fellow Estonian Jaan Tallin, to swiftly develop new coding. This effort led to the creation of the file-sharing software Kazaa, followed by similar techniques used for Skype. The six-member founding team sold Skype to eBay in 2005 for $3.1 billion (£2.3 billion).

Reflecting on the era of emerging tech, Heinla mentioned that Skype’s closure this year brought back memories. While he didn’t disclose his earnings, he indicated that he could travel in a private jet if he so desired.




Ahti Heinla believes robotics can “enhance everyone’s lives” through autonomous delivery. Photo: None

Yet, he insists, “Even if they’re capable, I’m not just chasing after money. I don’t need more wealth. Why should I want a palace? What’s the purpose?”

Instead, Heinla emphasized that achieving effective autonomous driving is a key way robotics can “integrate into everyone’s lives.”

After departing from Skype, Heinla explored various ventures, including attempts at social networking. In 2014, he entered a NASA contest to design an affordable Mars rover. Although NASA didn’t select his design, it was capable of traversing both extraterrestrial and urban terrains using radar, cameras, and ultrasound sensors that learned from their experiences.

By 2017, the robot was navigating in Estonia, accompanied by a model referred to as the “Safety Walker.” Heinla boasts that it became the first unsupervised robot operating autonomously in public settings. In 2018, the company commenced a pilot commercial service on the predictable roads of Milton Keynes, collaborating with Estonia’s high-tech company Bolt, and UK co-op supermarket chains along with US food delivery companies like Grubhub.




A robotics delivery vehicle in Milton Keynes, UK. Photo: Justin Long/Aramie

Starship may boast the world’s largest fleet of self-driving vehicles; however, as technology progresses, competition intensifies. Rival companies include the Saudi Arabia-backed Noon, and US startups like Nuro. Additionally, there’s stiff competition from numerous firms developing autonomous vehicles, including Tesla and Baidu.

A compelling competitor is Manna Aero from Dublin, a startup already utilizing flying drones for deliveries like coffee and pizza. Amazon and Google’s sister company, Wing, have also ventured into drone-based services.

A recurring issue for many of these businesses is encountering inconsistent regulations. Starship has had to negotiate with various UK councils, while in Finland, they service one million residents under national laws established for robot use on sidewalks, serving a population of 5.6 million. Meanwhile, the UK has far fewer robots catering to its 69 million population.

Skip past newsletter promotions

“We’re ready to invest in the UK for large-scale expansion, but we require regulatory clarity,” Heinla stated. “The number of robots in the UK is lower than in Finland, but there’s potential for growth. Many more robots could operate here.”

He highlighted a potential client in the UK that initially plans to deploy robots at 200 locations, with aspirations to expand to 800 sites, including areas beyond major towns and cities.




Testing a Starship Technology robot crossing the road in Northampton, UK. Photo: Brian Tomlinson/Starship Technologies

“That’s the unique capability of a robot,” Heinla stated. “Our goal is to introduce delivery services to small towns in the UK. We are prepared to invest in scaling these operations.”

While many economists and futurists warn about robots replacing human jobs, Heinla contends that Starship robots are addressing the growing demand for deliveries, allowing humans to focus on longer and more complex tasks. He further asserts that these robots help smaller businesses “thrive economically and compete against larger establishments,” enhancing overall capabilities.

Starship has raised just 200 million euros (£175 million) in funding, a modest sum compared to the billions amassed recently by rapid delivery companies that still rely on human workers. Many of these companies have fizzled out after initially attracting substantial investments, such as Getir and Gorillas.

The initial investment in a robot is relatively high—thousands of pounds, though not exceeding 10,000 euros, according to Heinla. However, the cost per delivery can compete with traditional human services. He declined to provide precise figures but stated that the Starship delivery model is cash-generative.

“While we’re not fully profitable yet, we are confident,” he clarified.

Some retailers question whether robots can outperform human delivery services offered by companies like Recrioo and Uber Eats. Nonetheless, Heinla argues that robots eliminate costs associated with downtime, making them viable options for urban restaurants and retailers in low-density areas.

“Almost every delivery service could benefit from this,” he asserted. “At a certain point, using robots becomes significantly cheaper, making it the obvious choice.”

Source: www.theguardian.com

Astronomers Uncover One of the Brightest and Fastest Radio Bursts Yet Recorded

Designated FRB 20250316A, this event, referred to as rbfloat (the brightest radio flash recorded to date), took place in the outer region of the nearby Spiral Galaxy NGC 4141.



Infrared image of Galaxy NGC 4141 featuring the rapid wireless burst FRB 20250316A. Image credits: NASA/ESA/CSA/CFA/Blanchard et al. / P. Edmonds.

The Fast Radio Burst (FRB) is a brief yet intense explosion of radio waves, primarily originating from distances beyond our galaxy.

The first FRB was detected in 2007, but an earlier observation was made six years ago in archival data from the Magellan Cloud Pulsar Survey.

These bursts last only a millisecond, hinting at the peculiar distributed pattern of radio pulsars.

They emit as much energy in a millisecond as the Sun releases over 10,000 years, yet the underlying cause remains a mystery.

Some theories propose that the characteristics of these bursts align with technologies of advanced civilizations, potentially arising from magnetized neutron stars or black holes interacting with surrounding gas.

The FRB 20250316A event was discovered on March 16, 2025. Located in the constellation Major Ursa, NGC 4141 is about 130 million light-years away.

Detection was accomplished using the Chime Outgar Array, where Canadian radio telescopes saw upgrades enabling precise FRB localization.

“With the Chime Outrigger, we’ve finally managed to capture these fleeting cosmic signals in real-time. We can narrow them down to specific stellar environments and individual galaxies,” noted one researcher.

Subsequently, Dr. Cook and her team employed the NASA/ESA/CSA James Webb Space Telescope to seek infrared signals from the same location.

“This was a unique opportunity to direct Webb’s powerful infrared capabilities toward the FRB’s position,” said Dr. Peter Blanchard, an astronomer at Harvard’s Center for Astrophysics.

“We were rewarded with remarkable results, revealing a faint source of infrared light very close to where the radio burst took place.”

“This could be the first object linked to an FRB found in another galaxy,” he added.

The infrared data from Webb indicated an object named NIR-1, likely a giant red star or possibly a giant middle-aged star.

A red giant is a sun-like star nearing the end of its life, expanding and becoming brighter, while the other possibilities are larger than the Sun.

Although these stars may not directly generate the FRB, they could possess invisible companions, such as neutron stars, that strip material from the red giants and massive stars. This mass transfer process might have triggered the FRB.

The advantages of a relatively close and precise location, coupled with sharp Webb images, permit the clearest observation of individual stars located near the FRB.

“Numerous theories have been proposed to explain FRBs, but up until now, there has been no data to test most of these ideas,” stated Professor Ed Berger from the Harvard & Smithsonian Center for Astrophysics.

“Isolating individual stars near the FRB is a significant improvement over previous searches, and we’re beginning to understand the stellar systems that could produce these powerful bursts.”

However, the red giant or massive star might not be connected to the FRB, prompting researchers to explore a larger area for further clues.

They discovered that the FRB was situated near a small cluster of young massive stars.

Given this positioning, they theorized that the giant stars in the cluster may collapse and form magnetars, leading to the FRB.

Magnetars are too dim to be directly seen in Webb’s observations.

The team examined various other potential explanations for the FRB, including objects from dense clusters of older stars and more giant stars.

These alternatives were deemed unlikely as they were brighter than the faint stars they observed.

“Regardless of whether the connection to the stars is real or not, we’ve learned a great deal about the origins of these bursts,” said Dr. Blanchard.

“If the double star system isn’t the solution, our findings imply that isolated magnetars could be responsible for the FRB.”

Another possible explanation for the infrared signals is that they may be reflected light from flares associated with the objects that triggered the radio bursts, potentially from magnetars. If this is the case, the infrared rays might diminish over time.

The team suggests more observations with Webb to search for such variations.

“We have taken a novel approach to unraveling the mystery of FRBs using Webb’s precise imaging, focusing on the exact position of the emitted FRBs,” Professor Berger remarked.

“We cannot predict when and where the next FRB will emerge, so we must be prepared to deploy Webb promptly when the moment arises.”

The team’s research paper was published in Astrophysics Journal Letters.

____

Peter K. Blanchard et al. 2025. apjl 989, L49; doi: 10.3847/2041-8213/ADF29F

Source: www.sci.news

New Study Unveils Countries with the Slowest and Fastest Aging Rates

A recent study reveals that Denmark boasts the most favorable environmental, social, and political conditions for aging slowly and maintaining a healthier lifestyle.

Published in Natural Medicine, this research pinpointed the elements influencing the biological processes that dictate healthy aging. An international team of researchers examined data from over 160,000 individuals across 40 nations, assessing how various factors influence aging worldwide.

To establish a baseline for the average aging rate, researchers utilized a measurement known as the “Biobiural Age Gap” clock. This AI model estimates the disparity between an individual’s chronological age and their predicted age based on surrounding risk factors. For instance, a 50-year-old person might be predicted to have a biological age of 55 based on these factors, resulting in a five-year age gap.

The findings revealed that among the four continents studied—Africa, Asia, Europe, and South America—European individuals showcased the highest levels of healthy aging. Conversely, in lower-income nations, accelerated aging was prevalent among older individuals.

“This study is significant as it reconceptualizes aging as influenced by not just biology and lifestyle, but also broader environmental and sociopolitical factors,” stated Morten Scheibye-Knudsen, an associate professor of aging at the University of Copenhagen, Denmark, who was not involved in the research, in comments to BBC Science Focus.

Egypt recorded the fastest rate of aging, with individuals showing an average biological age 4.75 years older than their chronological age. Following Egypt were South Africa and certain South American nations. Within Europe, Eastern and Southern regions displayed more rapid aging trends.

In contrast, Denmark demonstrated the slowest aging rate, with an average biological age 2.35 years younger than the actual age. The Netherlands and Finland followed in terms of healthy aging.

Key Factors for Healthy Aging

What makes Denmark and much of Northern and Western Europe conducive to healthy aging? Researchers identified crucial factors including environmental elements like air quality alongside social factors such as gender equality and socioeconomic status.

Interestingly, significant influences were also found in sociopolitical conditions. Healthy aging is closely related to political representation, freedom of parties, democratic elections, and voting rights.

“The link between politics and accelerated aging presents an intriguing puzzle in this study,” commented Scheibye-Knudsen. “Possible mechanisms include heightened chronic stress responses due to anxiety and healthcare disparities.”

This study indicated that individuals with accelerated aging face challenges in completing daily tasks and are eight times more likely to experience cognitive decline.

While the study spanned four continents, it primarily represented limited areas of Africa, focusing on Egypt and South Africa.

Researchers stress that their findings illustrate correlations rather than causative relationships. Nonetheless, they advocate for urgent action to address global health disparities.

“Remarkably, risk factors outweigh protective ones, indicating that individuals in low-income countries experience significantly accelerated aging irrespective of their socioeconomic status,” noted Scheibye-Knudsen.

“This reinforces the compelling case for investing in universal initiatives, such as access to education and healthcare, to enhance the health of populations.”

Read more:

About Our Experts

Dr. Morten Scheibye-Knudsen serves as an associate professor of aging at the University of Copenhagen and leads the Scheibye-Knudsen research group. He is also the president of the Nordic Aging Association.

Source: www.sciencefocus.com

The Top 10 Fastest Airplanes of 2024

Are you in a hurry? What's the rush? If you’re stuck on a plane with noisy kids for hours on end, you’ll definitely feel the need for speed. But which commercial airplane will get you to your destination the quickest?

Here, we take a look at the top speeds of planes worldwide, comparing their velocity and cost.

Buckle up, fasten your seatbelt, and hop on board the fastest aircraft in the sky.

10. Boeing 747-400 – 1056km/h (656mph)

A Qantas Boeing 747-400 takes off for the last time at Sydney Airport after being decommissioned in Sydney, Australia on July 22, 2020. Photo by James D. Morgan/Getty Images

Despite being in service for over 35 years, the iconic 747-400 earns a spot on this list. This version of the 747 was widely used by airlines for its impressive range and speed.

Unfortunately, this aging model is no longer being produced, with only one commercial plane still flying. The decline in use was hastened by reduced air travel during the COVID-19 pandemic.

9. Boeing 777 – 1098km/h (683mph)

A Boeing 777-9 performs at the 54th Paris International Air Show at Le Bourget Airport in Paris, France on June 19, 2023. Photo courtesy: Mustafa Yalcin/Anadolu Agency/Getty Images

Boeing’s popular 777 has been in operation for nearly 30 years and continues to be a key player in the aviation industry.

This aircraft can accommodate over 500 passengers, impressive for a twin-jet aircraft. It can also reach speeds of Mach 0.89, or 1099km/h.

8. Airbus A380 –1098km/h (683mph)

A380 demonstrated at the 2021 Dubai Air Show. Photo courtesy of Airbus

The A380 stands as the world’s only full-length double-decker plane, capable of carrying over 800 passengers comfortably. It’s the largest passenger aircraft ever made, with a width equal to 32 double-decker buses. Despite its size, it can still reach speeds of Mach 0.89.

Over the past 16 years, the A380 has transported over 300 million passengers worldwide. Despite production ending, this aircraft’s speed and luxury ensure it will remain in operation for years to come.

7. Dassault Falcon 7X – 1111km/h (690mph)

Dassault Falcon 7X arrives on land. Photo courtesy: N509FZ/Wikipedia

The unassuming but swift Dassault Falcon 7X is a triple-engine business jet known for its speed, reaching over 1100km/h while carrying 16 passengers in luxury. Its unique trijet design sets it apart from other aircraft, enhancing fuel efficiency.

Dassault has a long history of manufacturing Falcon planes, with the even faster Falcon 10X on the horizon with a top speed of Mach 0.925.

6. Boeing 787 Dreamliner – 1111km/h (690mph)

A Boeing 787-9 Dreamliner lands at Barcelona Airport, Spain, on January 4, 2023. Photo courtesy: Urbanandsport/NurPhoto/Getty Images

Boeing’s renowned Dreamliner is known for its comfort and efficiency, but it also boasts impressive speed, reaching 1111km/h.

With over 1,000 planes in operation worldwide, the Dreamliner is a popular choice for long-haul flights.

5. Boeing 747-8i – 1136km/h (706mph)

A Boeing 747-8 flies over Barcelona Airport, Spain, on December 16, 2022. Photo credit: Urbanandsport/NurPhoto/Getty Images

Despite its aging platform, the 747-8i stands as the world’s fastest large commercial jet, capable of transporting nearly 500 passengers at speeds over 1130 km/h.

In a testament to its capabilities, two 747-8i planes are undergoing refurbishment for the U.S. Air Force, set to become Air Force One in 2024.

4. Gulfstream G700 – 1142.19km/h (709mph)

Gulfstream G700 in action. Photo credit: Gulfstream

Gulfstream’s luxury private jet, the G700, is known for its incredible top speed, matching its hefty price tag of $80 million (£63 million).

With room for 19 passengers, a range of 13,000km, and the ability to fly above turbulent weather conditions, the G700 offers a smooth and luxurious travel experience.

More like this:

3. Cessna Citation X+ – 1154.538km/h (717mph)

A Cessna Citation X on final approach to land. Photo credit: Aviation-images.com/Universal Images Group/Getty Images

An upgraded version of the Citation X, the Citation X+ offers a larger cabin and increased top speed. While it has a shorter range than competitors, it remains a popular choice despite production ending in 2018.

2. Bombardier Global 8000 – 1160km/h (721mph)

Global 8000 is scheduled to be operational in 2025. Photo credit: Bombardier

If you’ve ever envied Logan Roy’s jet-setting lifestyle on “Succession” but found traditional planes too slow, the Global 8000 is your solution. This aircraft can reach speeds of up to 1160km/h (Mach 0.94) while accommodating 19 passengers in luxury.

With a projected range exceeding 14,000km, the Global 8000 is set to replace the Global 7500 in 2025.

1. SpaceShipTwo “Unity” – 3704 km/h (2301.81 mph)

The Virgin Galactic SpaceShipTwo VSS Unity spacecraft returns to Earth on July 11, 2021, after flying over Spaceport America near Truth and Consequences, New Mexico, on its way to space. I will return. Photo by Patrick T. Fallon/AFP/Getty Images

The world’s fastest plane available for passengers in 2023 will be a Virgin Galactic craft. In July 2021, six passengers on a rocket plane reached speeds of Mach 3 over New Mexico.

Unlike traditional planes, the VSS Unity is powered by a single rocket engine and requires a launch vehicle to reach operational height. Once launched, it can achieve speeds over 3,700km/h at an altitude of around 90km.

After two decades of development, commercial flights have begun, with tickets costing $400,000 for a 90-minute journey.

Read more:

Source: www.sciencefocus.com

The Top 10 fastest jets for 2025

Top Gun There’s really a lot to answer for. Before this movie was released, generations of kids wanted to be astronauts or sports stars. But when Tom Cruise’s blockbuster hit our screens, suddenly everyone was dreaming of donning aviators and taking to the skies in a technologically advanced million-pound fighter jet.

Our gallery has compiled information about the 10 fastest jet planes in the world and their history.

Strap on and have your sick bags ready as you take to the skies to see which jet is the fastest.

10 – F-22 Raptor

An F-22 Raptor flies over Kadena Air Base, Japan on a routine training mission. Photo by Sergeant Major Andy Dunaway/U.S. Air Force

This single-seat stealth fighter is a formidable weapon with a top speed of Mach 2.25 and long-range cruise capability, not to mention a large number of missiles.

Because its stealth capabilities are so advanced, the F-22 is not allowed to be sold outside the United States. But despite its speed and stealth, it has been overshadowed by the slower but more versatile F-35 Lightning II jet.

Production of the F-22 ended after only 187 were built, making it relatively rare to see it in the air.

9 – MiG-29 Fulcrum

Bangladesh Air Force MiG-29 with full afterburner. Photo credit: Bangladesh Air Force/Wikipedia

The MiG-29 was built by the Soviet Union during the Cold War to compete with aircraft such as the F-15 Eagle. It is a lightweight fighter aircraft that can fly 1,500 km on fuel tanks and can refuel in the air. It has a top speed of Mach 2.3, which is extremely fast.

This jet is extremely well built and durable, able to withstand takeoffs and landings on the roughest runways. It has undergone a continuous upgrade program and is still used in many countries around the world.

8 – F-14 Tomcat

An F-14D Tomcat flies over the Persian Gulf region. Photo by Sergeant Rob Tabor/USAF

The F-14 is perhaps best known as the star of the original 1986 film Top Gun. Those familiar with the movie will be familiar with its agility and cockpit built for two people. You may also be aware of the fact that it was operated from an aircraft carrier and had impressive takeoff and landing sequences.

The F-14 is equipped with two jet engines to achieve a top speed of Mach 2.34 and has been in service for over 30 years, making it one of the most famous jet fighters in the world.

7 – MiG-23 Frogger

An aerial view of a Soviet-era MiG-23 jet in flight. Photo credit: U.S. Air Force

The MiG-23 is one of the most famous jets on our list, thanks to its variable swept wing design. This makes it very light and agile in flight, making it ideal for air combat situations. Top speed is Mach 2.35, which is difficult to exceed.

As such, it proved to be a very popular airplane, with over 5,000 built over 18 years. Even though the design is nearly 60 years old, it is still in use in some countries thanks to its excellent manufacturing quality.

6 – Sukhoi Su-27 Flanker

Sukhoi Su-27 demonstrating its capabilities at the MAKS-2005 air show. Photo credit: Dmitry Pichugin/Wikipedia

The versatile Sukhoi Su-27 jet has a top speed of Mach 2.35, which means it barely cracks the top five. But speed is not the only appeal of this jet. It also boasts an excellent range and excellent flight maneuverability.

The plane’s climbing ability is legendary, reaching an amazing altitude of 12 km in less than a minute. Thanks to its versatility and flight characteristics, it remains in production more than 40 years after its introduction.

5 – F-15 Eagle

An F-15C Eagle of the 44th Fighter Squadron flies during routine training from Kadena Air Base, Japan. Photo by Airman 1st Class Matthew Seefeldt/U.S. Air Force

McDonnell Douglas’ venerable F-15 fighter jet remains one of the fastest jet aircraft, with a top speed of Mach 2.5.

Due to its light weight and large wing area, the F-15 is incredibly agile and capable of making small turns without losing speed.

4 – MiG-31 Foxhound

A MiG-31 jet fighter performs at the MAKS-2021 International Aerospace Salon held in Zhukovsky, a suburb of Moscow, Russia. Photo by Mikhail Svetlov/Getty Images

The MiG-31 is one of the oldest jet aircraft still in service. It features a top speed of Mach 2.83, making it a very impressive jet.

3 – MiG-25 Foxbat

A supersonic all-weather fighter interceptor MiG-25PD of the Ukrainian Air Force took off from the air base in the city of Dnepropetrovsk. Photo credit: Alamy

The Mikoyan Gurevich MiG 25 remains the third fastest jet fighter with a top speed of Mach 2.83. Even the latest version is still in use in some countries, despite being outdated.

The plane could theoretically reach speeds of at least Mach 3.2, but its top speed was limited to Mach 2.83 to prevent engine damage from prolonged travel at high speeds.

Over its long lifespan, approximately 1,200 were built, making it one of the most successful fighter aircraft of all time.

2 – Lockheed SR-71 Blackbird

This photo shows a Lockheed SR-2 used for pilot proficiency and training on the ramp at Air Force Plant 42 in Palmdale, California, just before being delivered to the Ames Dryden Flight Research Facility (later Dryden Flight). This is a front view of 71B. Research Center), located in Edwards, California. Photo courtesy of NASA

The SR-71, known as the “Blackbird,” remains the second fastest jet aircraft in history with a top speed of Mach 3.3. It was developed for high-altitude flight during reconnaissance missions throughout the Cold War era.

The last person to fly the SR-71 was NASA, which used the plane to train pilots for high-speed, high-altitude flights.

1 – NASA X-43

NASA X-43 during testing in March 2004. The aircraft was ejected at an altitude of 29,000 meters. Photo courtesy of NASA

The world’s fastest jet aircraft is NASA’s X-43 experimental aircraft, reaching a speed of Mach 9.6 thanks to its scramjet design.

Although the design of these aircraft required them to descend from a Boeing B-52 in order to fly, they are still very impressive aircraft.

position plane airspeed
10 F-22 Mach 2.25
9 mig-29 Mach 2.3
8 F-14 Mach 2.34
7 mig-23 Mach 2.35
6 Sukhoi Su-27 Mach 2.35
5 F-15 Mach 2.5
4 mig-31 Mach 2.83
3 mig-25 Mach 2.83
2 SR-71 Blackbird Mach 3.3
1 X-43 Mach 9.6

Read more:

Source: www.sciencefocus.com

New Supercomputer Built to Simulate Nuclear Bombs is the Fastest in the World

El Capitan supercomputer at Lawrence Livermore National Laboratory

Garry McLeod/Lawrence Livermore National Laboratory

The top spot in the league table of the world's most powerful computers has changed hands, with one supercomputer built for US national security research overtaking another.

top 500The final list of the most powerful computers is based on one metric: how fast a machine can solve large numbers of equations, measured in floating point operations per second (FLOPS). Masu. A machine called Frontier, built in 2022, was the first to be publicly acknowledged to have reached exascale (1 billion FLOPS).

Frontier was founded by Oak Ridge National Laboratory in Tennessee to not only perform nuclear weapons simulations, but also address a variety of complex scientific problems such as climate modeling, fusion simulations, and drug discovery. Ta.

Now, Lawrence Livermore National Laboratory (LLNL) in California has developed El Capitan, which has a power of 1.742 exaFLOPS, more than any other supercomputer.

The machine was built under tight security in cooperation with the National Nuclear Security Administration, a division of the Department of Energy dedicated to developing nuclear weapons science. The agency was established in 2000 in response to revelations that nuclear secrets had been leaked from the Department of Energy to China.

Essentially, El Capitan would provide the vast computational power needed to ensure the effectiveness of the U.S. nuclear deterrent without conducting any physical nuclear tests. LLNL claims that complex, high-resolution 3D simulations of nuclear explosions that previously took months on Sierra, its most powerful system, can be completed in just hours or days on El Capitan.

topic:

Source: www.newscientist.com

VLBA uncovers groundbreaking information on the magnetars with the fastest spin rates

Swift J1818.0-1617 is located about 22,000 light-years away in the constellation Sagittarius.



Artist's impression of magnetar Swift J1818.0-1617. Image courtesy of NSF/AUI/NRAO/S. Dagnello.

Swift J1818.0-1617, discovered in 2020, rotates with a rotation period of 1.36 seconds and is thought to be the fastest rotating magnetar yet discovered.

The star is located on the opposite side of the Milky Way galaxy's bulge, 22,000 light-years away, making it relatively close to Earth.

In fact, it's so close that we can use parallax to pinpoint its 3D location within the galaxy.

The lifespan of magnetars is currently unknown, but astronomers estimate that Swift J1818.0-1617 is only a few hundred years old.

“A magnetar's bright X-ray emission requires a mechanism of extremely high-energy outflow. Only the rapid decay of its powerful magnetic field can explain the force behind these spectral features,” said Dr. Hao Ding, an astronomer at the National Astronomical Observatory of Japan, and his colleagues.

“But again, this is an extreme process: for normal stars on the main sequence, bright blue stars burn through their fuel much faster than yellow stars, and therefore have very short lifetimes.”

“In the case of magnetars, although the physics are different, their lifetimes are also thought to be shorter than those of pulsars.”

“Magnetars are too young to continue releasing energy at this rate for long periods of time,” the researchers added.

“Moreover, magnetars can also exhibit radiation in the lower end of the electromagnetic spectrum, i.e. at radio wavelengths.”

“In these cases, the most likely energy source is synchrotron radiation produced by the magnetar's rapid rotation.”

“In synchrotron radiation, the plasma surrounding the neutron star itself is so tightly attached to the surface of the star that it rotates at very close to the speed of light and produces radiation at radio wavelengths.”

Astronomers NSF's Very Long Baseline Array (VLBA) was conducted over a three-year period to collect data on the position and velocity of Swift J1818.0-1617.

“The VLBA provided excellent angular resolution to measure this extremely small disparity, and the spatial resolution is unmatched,” said Dr Ding.

Swift J1818.0-1617's parallax is the smallest of any neutron star, and its so-called transverse velocity is the smallest of any magnetar (a new lower limit).

“Velocity in astronomy can be most simply described as having two components: direction and velocity,” the researchers explained.

“Radial velocity tells us how fast we're moving along the line of sight. In this case, radial velocity means the speed along the radius of the galaxy.”

“For magnetars like Swift J1818.0-1617, which are located on the opposite side of the central bulge, there is too much other material in the way to accurately measure the radial velocity.”

“Transverse velocity, sometimes called proper velocity, describes motion perpendicular to the galactic plane and is more easily identifiable.”

Astronomers are trying to understand the common (and different) formation processes between regular neutron stars, pulsars and magnetars, and hope to use precise measurements of the transverse velocities to analyse the conditions under which stars evolve along one of these three paths.

“This study adds weight to the theory that magnetars are unlikely to form under the same conditions as young pulsars, and suggests that magnetars are born from a more unconventional formation process,” Dr Ding said.

“We need to know how fast magnetars were moving when they were first born. The mechanism by which magnetars form is still a mystery, and we want to find out.”

Source: www.sci.news

Berlin witnesses fastest spinning asteroid breakup in recorded history

A long exposure photo showing the trajectory of asteroid 2024 BX1 just before impact. Changes in brightness are caused by the asteroid’s rotation

L. Buzzi, Schiaparelli Observatory, Italy (MPC 204)

The asteroid that entered Earth’s atmosphere this year was spinning at a rate of 2.6 seconds per rotation, faster than any known asteroid.

The object, known as 2024 BX1, was likely less than one meter wide and entered Earth’s atmosphere on January 21. It disintegrated over Berlin, Germany. Some debris survived the fireball and was retrieved. This is a rare instance of a monitored asteroid fall, where the incoming rock was detected before impact, in this case, just three hours prior to impact.

Maxime Devogele and his team at the European Space Agency’s Near-Earth Object Coordination Center in Italy captured images of the asteroid before impact. Despite traveling at around 50,000 kilometers per hour, the elongated shape of the asteroid made changes in brightness due to rotation quite noticeable in these images.

These changes in brightness corresponded to a rotation time of 2.588 seconds, equivalent to approximately 30,000 rotations per day. “This is the fastest rotation we have observed to date,” Devogele remarked.

Asteroids rotate for various reasons, including early-life collisions. In general, a space rock larger than one kilometer cannot rotate more than once every 2.2 hours, as it would disintegrate. However, smaller asteroids like 2024 BX1 are more resilient and can withstand much faster rotations. “They have internal strength, allowing them to rotate at higher speeds,” Devogele explained.

Measuring the rotation of such objects could be beneficial for planetary defense, providing insights into the durability of small asteroids and their likelihood of surviving passage through Earth’s atmosphere. “If you have hard snow, it will react differently than if you have snow with no internal strength,” Devogele stated.

topic:

Source: www.newscientist.com

The 10 Quickest Jets of 2024: The Fastest in the World

Before the movie Top Gun, kids dreamed of being astronauts or sports stars. But after the release of the film, everyone wanted to be pilots in high-tech fighter jets.

Our gallery provides information about the 10 fastest jet planes in the world and their history.

Strap in and get your sick bags ready as we take to the skies to see which jet is the fastest.

10 – F-22 Raptor

An F-22 Raptor flies over Kadena Air Base, Japan on a routine training mission.Photo by Sergeant Major Andy Dunaway/U.S. Air Force

The F-22 Raptor is a single-seat stealth fighter with a top speed of Mach 2.25 and long-range cruise capability. Its stealth capabilities are so advanced that it’s not allowed to be sold outside the United States. Despite its speed and stealth, it has been overshadowed by the F-35 Lightning II jet. Only 187 were built, making it rare to see in the air.

9 – MiG-29 Fulcrum

Bangladesh Air Force MiG-29 with full afterburner.Photo credit: Bangladesh Air Force/Wikipedia

The MiG-29 was built by the Soviet Union and has a top speed of Mach 2.3. Despite its age, it’s still used in many countries around the world.

8 – F-14 Tomcat

An F-14D Tomcat flies over the Persian Gulf region. Photo by Sergeant Rob Tabor/USAF

The F-14 has a top speed of Mach 2.34 and has been in service for over 30 years.

7 – MiG-23 Frogger

An aerial view of a Soviet-era MiG-23 jet in flight.Photo credit: U.S. Air Force

The MiG-23 has a top speed of Mach 2.35 and is known for its agility. Over 5,000 were built and it is still in use today.

6 – Sukhoi Su-27 Flanker

Sukhoi Su-27 demonstrating its capabilities at the MAKS-2005 air show.Photo credit: Dmitry Pichugin/Wikipedia

The Sukhoi Su-27 has a top speed of Mach 2.35 and is known for its excellent range and flight maneuverability. It remains in production more than 40 years after its introduction.

read more:

Source: www.sciencefocus.com