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Cleaning up the universe of its space junk

This week, we take a look at how space junk can be cleaned up. Also, it's no bigger than three apples stacked on top of each other, yet it's set to unveil many secrets about stellar formation. We tell you more about the French nano-satellite Picsat, which was recently launched into space to study the star Beta Pictoris. Plus, we talk about planned obsolescence and test two robust innovations which are going against that trend.
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