BBC Science Focus

NET SUCCESSFUL­LY SNARES SPACE JUNK IN PRACTICE RUN

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Back of the net! The Surrey Space Centre’s RemoveDebr­is satellite has successful­ly captured ‘space junk’ on its first test run.

The satellite deployed its net to capture a man-made target simulating a piece of space junk while in orbit more than 300km above the surface of the Earth (most real space junk lies between 800-850km above Earth). It is the first demonstrat­ion of its kind ever to succeed.

“We are absolutely delighted with the outcome of the net technology,” said Professor Guglielmo Aglietti, director of the Surrey Space Centre. “While it might sound like a simple idea, the complexity of using a net in space to capture a piece of debris took years of planning, engineerin­g and coordinati­on between the Surrey Space Centre, Airbus and our partners – but there is more work to be done. These are very exciting times for us all.”

The US Space Surveillan­ce Network currently tracks around 40,000 pieces of space junk orbiting Earth. With some pieces travelling at speeds approachin­g 48,300km/h (30,000mph) there is a serious risk of them damaging satellites should a collision occur.

In the coming months, RemoveDebr­is will test more of its junk retrieval technologi­es including a vision-based navigation system that uses specially designed cameras to analyse and observe potential pieces of junk and a harpoon capture system. Once the trials are complete the satellite will release a dragsail that will the bring it into the Earth’s atmosphere where it will burn up.

 ??  ?? An artist’s impression of RemoveDebr­is capturing a piece of space junk and (inset) the satellite during final assembly
An artist’s impression of RemoveDebr­is capturing a piece of space junk and (inset) the satellite during final assembly

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