How do you clean up 60 years of space junk?
![International Space Station (Getty Images: NASA)](http://web.archive.org./web/20170404185457im_/http://www.abc.net.au/news/image/8413334-3x2-220x147.jpg)
Cleaning up space junk is essential for future space operations. And it's not going to be easy, says Dr Karl.
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