As of 2020, there were over 19,000 pieces of individually tracked space junk in orbit above the Earth. Of those, a mere 2,200 were operational satellites. As more and more satellites go up, the risk of collisions increases. And what are governments doing to stop it? Basically, nothing.Continue reading “We Need to Fix Space Junk Before It’s Too Late”
The International Space Station’s robotic arm, Canadarm2, was struck by a piece of space debris. But luckily, it appears to be only a flesh wound, and the arm has been cleared for nominal operations while analysis on the strike continues.Continue reading “Nooo! Canadarm2 Hit by a Piece of Space Debris”
According to the latest numbers from the ESA’s Space Debris Office (SDO), there are roughly 6,900 artificial satellites in orbit. The situation is going to become exponentially crowded in the coming years, thanks to the many telecommunications, internet, and small satellites that are expected to be launched. This creates all kinds of worries for collision risks and space debris, not to mention environmental concerns.
For this reason, engineers, designers, and satellite manufacturers are looking for ways to redesign their satellites. Enter Max Justice, a cybersecurity expert, former Marine, and “Cyber Farmer” who spent many years working in the space industry. Currently, he is working towards a new type of satellite that is made out of mycelium fibers. This tough, heat-resistant, and environmentally friendly material could trigger a revolution in the booming satellite industry.Continue reading “A Solution to Space Junk: Satellites Made of Mushrooms?”
Researchers at the Australian National University (ANU) are finding new uses for the laser-based technology that sharpens telescope imagery – called adaptive optics – and it just might help mitigate the world’s growing space debris problem. Purpose-built lasers could give derelict satellites a slight ‘push’ of photons, imparting just enough energy to change the debris’s orbit and prevent an impending collision.Continue reading “Ground-Based Lasers Could Push Space Debris off Collision-Course Orbits”
If the Roman Empire had been able to launch a satellite in a relatively high Low Earth Orbit – say about 1,200 km (750 miles) in altitude – only now would that satellite be close to falling back to Earth. And if the dinosaurs had launched a satellite into the furthest geostationary orbit – 36,000 km (23,000 miles) or higher — it might still be up there today.Continue reading “How Long Will Space Junk Take to Burn Up? Here’s a Handy Chart”
How much would you be willing to spend to remove a piece of space debris? Does $102 million sound like enough? That is how much a contract between the European Space Agency (ESA) and a Swiss start-up named ClearSpace SA is worth, and the entire contract is to simply remove a single piece of space debris.Continue reading “ESA Is Going To Spend $102 Million To Remove a Single Piece of Space Junk”
Founded in 2016, Menlo Park, California-based LeoLabs, is a mind-blowing company. They have built, and continue to expand, a network of ground-based, phased array radars worldwide to keep track of the thousands of operational satellites, defunct satellites, spent rocket bodies, and pieces of debris in orbit around the Earth. Not only is their radar technology ground-breaking, but they have built a spectacular, if not a little terrifying, digital visualization of the traffic in space that is free for the public to explore.Continue reading “Terrify yourself with LeoLabs’ visualization of satellites and space debris around Earth”
Dropping a mirror on Earth is only minor cause for concern, perhaps about the potential of some upcoming bad luck. Dropping a mirror while on a spacewalk means creating a potentially dangerous new piece of space junk, all while thousands of people watch it happen, streaming live.Continue reading “Astronaut Drops a Mirror During a Spacewalk. Now There’s Another Piece of Space Junk”
Update. It looks like we didn’t roll a 1 on the d20, and the satellites passed each other without an impact. But this will probably become a more common occurrence as the skies get more crowded.
Over sixty years of space exploration have left their mark in Low Earth Orbit (LEO), where thousands of objects create the risk of collisions. These objects include the spent first stages of rockets, fragments of broken-up spacecraft, and satellites that are no longer operational. As Donald Kessler predicted, the growing presence of “space junk” could result in regular collisions, leading to a cascading effect (aka. Kessler Syndrome).
This evening – on Wednesday, Jan. 29th – such a collision might take place. These satellites are the Infrared Astronomical Satellite (IRAS), an old space telescope launched by NASA, the Netherlands, and the UK; and the GGSE-4 gravitational experiment launched by the US Air Force. These two satellites run the risk of colliding when their orbits cross paths at 06:40 p.m. EST (03:40 p.m. PST) about 900 km (560 mi) above Pittsburgh, Pennsylvania.Continue reading “There’s a 1 in 20 Chance That Two Dead Satellites Might Crash Tonight (Update: No Collision)”
A company called Tethers Unlimited has deployed its de-orbiting tether in a successful test on the Prox-1 satellite. The satellite is one of four that are carrying the device, called the Terminator Tape. Rather than stay in space for years or decades, and add to the growing problem of space debris, Prox-1 is using its Terminator Tape to slowly lower its orbit.Continue reading “A Cubesat Deployed a De-Orbiting Tether and Now it’s Losing Altitude 24 Times Faster than Before”