Satellite uses giant net to trap spinning bit of space junk
The RemoveDEBRIS spacecraft captured a probe in a demonstration of space debris cleanup.
The space landfill: Earth’s orbit is full of space junk. Right now there are about 8,000 man-made objects floating around our planet being tracked by the US Department of Defense’s Space Surveillance Network. And that’s a problem, because the more things we send up there, the greater the chances they crash into each other. That creates many more, smaller bits of junk, which would pose serious danger to future space missions (see the movie Gravity).
The news: On Sunday, the RemoveDEBRIS satellite first spat out a tiny satellite called a CubeSat to use as target practice. Seconds later, it fired a net to try to capture it. As you can see in the video above, the net succeeded in wrapping up and securing the item. If the system were used for real, the junk would then be towed down into Earth’s atmopsphere to burn up, but in this case it will be allowed to fall to Earth.“While it might sound like a simple idea, the complexity of using a net in space to capture a piece of debris took many years of planning, engineering, and coordination,” says Guglielmo Aglietti, director of the Surrey Space Centre at the University of Surrey, UK.
A space laser: A net is far from the craziest idea for clearing up lower Earth orbit. Lasers and junk-eating rocket engines have also been considered in the past.
What’s next? The researchers will be using the RemoveDEBRIS satellite to test a new navigation system and another way of trapping space trash: a harpoon that can directly spear objects.
Deep Dive
Space
The Biggest Questions: Are we alone in the universe?
Scientists are training machine-learning models and designing instruments to hunt for life on other worlds.
This startup wants to find out if humans can have babies in space
SpaceBorn United wants to conduct an IVF experiment in Earth’s orbit to pave the way for long-term space missions.
The Biggest Questions: Why is the universe so complex and beautiful?
For some reason the universe is full of stars, galaxies, and life. But it didn’t have to be this way.
Inside NASA’s bid to make spacecraft as small as possible
When it comes to exploring the solar system, we must grapple with the hard limits of physics.
Stay connected
Get the latest updates from
MIT Technology Review
Discover special offers, top stories, upcoming events, and more.