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In a world first, NASA has crashed a spacecraft into an asteroid in an attempt to push the rocky traveler off its trajectory. The Double Asteroid Redirection Test – or DART – is meant to test one potential approach that could prevent an asteroid from colliding with Earth. David Barnhart is a professor of astronautics at the University of Southern California and director of the Space Engineering Research Center there. He watched NASA’s live stream of the successful mission and explains what is known so far.

1. What do the images show?

The first images, taken by a camera aboard DART, show the double asteroid system of Didymos – about 2,500 feet (780 meters) in diameter – being orbited by the smaller asteroid Dimorphos that is about 525 feet (160 meters) long.

As the targeting algorithm on DART locked onto Dimorphos, the craft adjusted its flight and began heading towards the smaller of the two asteroids. The image taken at 11 seconds before impact and 42 miles (68 kilometers) from Dimorphos shows the asteroid centered in the camera’s field of view. This meant that the targeting algorithm was fairly accurate and the craft would collide right at the center of Dimorphos.

The second-to-last image, taken two seconds before impact shows the rocky surface of Dimorphos, including small shadows. These shadows are interesting because they suggest that the camera aboard the DART spacecraft was seeing Dimorphos directly on but the Sun was at an angle relative to the camera. They imply the DART spacecraft was centred on its trajectory to impact Dimorphos at the moment, but it’s also possible the asteroid was slowly rotating relative to the camera.

The final photo, taken one second before impact, only shows the top slice of an image but this is incredibly exciting. The fact that NASA received only a part of the image implies that the shutter took the picture but DART, traveling at around 14,000 miles per hour (22,500 kilometers per hour) was unable to transmit the complete image before impact.

2. What was supposed to happen?

The point of the DART mission was to test whether it is possible to deflect an asteroid with a kinetic impact – by crashing something into it. NASA used the analogy of a golf cart hitting the side of an Egyptian pyramid to convey the relative difference in size between tiny DART and Dimorphos, the smaller of the two asteroids. Prior to the test, Dimorphos orbited Didymos in roughly 16 hours. NASA expects the impact to shorten Dimorphos’ orbit by about 1 percent or roughly 10 minutes. Though small, if done far enough away from Earth, a nudge like this could potentially deflect a future asteroid headed towards Earth just enough to prevent an impact.

3. What do we know already?

The last bits of data that came from the DART spacecraft right before impact show that it was on course. The fact that the images stopped transmitting after the target point was reached can only mean that the impact was a success.

While there is likely a lot of information to be learned from the images taken by DART, the world will have to wait to learn whether the deflection was also a success. Fifteen days before the impact, DART released a small satellite with a camera that was designed to document the entire impact. The small satellite’s sensors should have taken images and collected information, but given that it doesn’t have a large antenna onboard, the images will be transmitted slowly back to Earth, one by one, over the coming weeks.

4. What does the test mean for planetary defense?

I believe this test was a great proof-of-concept for many technologies that the US government has invested in over the years. And importantly, it proves that it is possible to send a craft to intercept with a minuscule target millions of miles away from Earth. From that standpoint DART has been a great success.

Over the course of the next months and years, researchers will learn just how much deflection the impact caused – and most importantly, whether this type of kinetic impact can actually move a celestial object ever so slightly at a great enough distance to prevent a future asteroid from threatening Earth.


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Russian Kosmos Satellites Release Mysterious Object in Orbit

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Russian Kosmos Satellites Release Mysterious Object in Orbit

A group of Russian satellites launched earlier this year has caught the attention of space watchers around the world. The satellites – Kosmos 2581, 2582, and 2583 – were sent into orbit in early February from the Plesetsk Cosmodrome. They’ve been placed in a near-polar orbit, about 585 kilometres above Earth. So far, Russian officials haven’t confirmed what these satellites are actually meant to do. But what’s really stirred interest is the release of an unknown object from one of them. This new development, spotted in mid-March, has prompted fresh scrutiny from space monitoring teams across the globe.

What We Know So Far

According to tracking data from the United States Space Force and other monitoring groups, the mysterious object appeared on March 18. It was quickly catalogued and, at first, linked to Kosmos 2581. Later on, though, some signals hinted it might be tied to Kosmos 2583 instead. What’s clear is that the object was released while the satellites were still active – and so far, Russia hasn’t said a word about it.

Interestingly, before the object showed up, the satellites were seen carrying out what’s known as “proximity operations” – basically manoeuvring close to other objects in orbit, which is not something routine satellites typically do.

Expert Insight and Possible Explanations

Astrophysicist Jonathan McDowell from the Harvard-Smithsonian Center for Astrophysics spoke to Space.com about the situation. He pointed out that the satellites had been making deliberate close-range movements, which has led many to believe this isn’t just routine activity.

As for the object itself, there are a few possibilities. It could be part of a satellite testing programme or a tool for formation flying. There’s also a chance it’s linked to some kind of military experiment. While a technical malfunction hasn’t been ruled out, experts note that accidents like that usually leave behind several bits of debris – and that doesn’t seem to be the case here.

Putting It Into Context

The “Kosmos” label has been used by Russia for decades, dating back to 1962. It covers a broad range of secretive military and scientific missions. Triplets like this group aren’t unusual either – China and the US have also used similar formations, often for surveillance or intelligence-gathering purposes.
Still, the exact purpose of Kosmos 2581, 2582, 2583 – and now this newly released object – remains a mystery. Until more information is released (if it ever is), analysts will continue to watch closely from the ground.

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NASA’s Parker Solar Probe Completes Second Close Flyby of the Sun

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NASA’s Parker Solar Probe Completes Second Close Flyby of the Sun

NASA’s Parker Solar Probe has made its second close flyby of the sun. The spacecraft travelled at a speed of 692000 kilometres per hour. It moved within 6.1 million kilometres of the sun. This event took place on March 22. A signal confirming its good health was received on March 25. The signal confirmed that all systems on board were working as planned. The probe was designed to study solar winds and collect data from the sun’s outer atmosphere. The mission is being used to help scientists understand solar activity that affects Earth.

More About The Mission

According to NASA’s announcement, the probe’s instruments were activated during the pass. They were used to study the corona. This is the outer layer of the sun’s atmosphere. The spacecraft was operated on its own during the flyby. It had been programmed in advance. Scientists believe this data may help them understand why the corona is hotter than the sun’s surface. The data is also being used to study changes in space weather. This information is considered important for protecting satellites and communication systems on Earth.

Quote from NASA

In a press release issued by NASA, acting Administrator Janet Petro said that the mission has entered a zone no spacecraft has visited before. Petro said this while addressing the media at the agency’s Washington headquarters. She said that the research is expected to change how solar science is studied in the future.

Award given to the team

As per a statement released by the National Aeronautic Association, the mission team was given the 2024 Robert J. Collier Trophy. The team includes experts from NASA and Johns Hopkins Applied Physics Laboratory. Ralph Semmel, Director at Johns Hopkins APL, said that the mission was once believed to be impossible. He shared this in an interview with NASA’s press team. The next close flyby is expected to take place on June 19.

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ISRO’s Shubhanshu Shukla Set to Make History with Space Station Mission in May

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ISRO’s Shubhanshu Shukla Set to Make History with Space Station Mission in May

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ISRO’s Shubhanshu Shukla Set to Make History with Space Station Mission in May

The mission of Indian astronaut Group Captain Shubhanshu Shukla to the International Space Station (ISS) will take place in May 2025. This mission will be the greatest research and science-related activity carried out on an Axiom Space voyage onboard the International Space Station to date, emphasizing the mission’s global relevance and collaborative character in advancing microgravity research in low-Earth orbit (LEO). NASA confirmed from its Kennedy Space Center in Florida, United States, that the mission will launch no earlier than May 2025.

Mission Overview and Crew

Shubhanshu Shukla will join an international crew on a commercial spacecraft; he is a skilled aerospace engineer and one of ISRO’s top astronaut prospects. This mission is viewed as a watershed moment in India’s larger journey toward advanced space exploration and human spaceflight.

ISRO’s research studies will focus on investigating the physical and cognitive impact of computer screens in microgravity and studying the growth, metabolism, and genetics of three microalgae strains in microgravity.

Scientific Objectives and Experiments

The ISRO-led study, in collaboration with NASA and ESSA, aims to increase microgravity research aboard the ISS to better our understanding of biological processes in microgravity and develop strategies for long-term space missions.

India’s Expanding Role in Space

Indian astronaut Group Captain Shubhanshu Shukla will be the first Indian astronaut to visit the International Space Station and the first Indian to travel to space in the past 40 years.The commercial mission will be directed by experienced NASA astronaut Peggy Whitson, with Tibor Kapu from Hungary and European Space Agency project astronaut Sławosz Uznański-Wiśniewski from Poland.

Mission Duration and Recovery

Following the launch from Kennedy Space Center, the mission crew will spend 14 days on board the International Space Station, completing several experiments.

According to Axiom Space, the Ax-4 research complement includes over 60 scientific programs and activities from 31 nations, including the United States, India, Poland, Hungary, Saudi Arabia, Brazil, Nigeria, the UAE, and countries throughout Europe.

After achieving their objectives, the spacecraft will return to Earth, with a splashdown scheduled in the Pacific Ocean. NASA and its allies will oversee recovery efforts to ensure the safe return of all crew members.

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