Possibly...
... the most dull YouTube video in the world.
Cool (in a nerdy way) seeing how what I would expect to be rigid metals behave differently without the interaction of atmosphere or gravity.
The European Space Agency has successfully commanded the Herschel space telescope to open the protective cover protecting its instruments, meaning scientists can get down to the task of observing the universe in far infrared and sub-millimetre wavelengths. In a department of the bleedin' obvious moment, the team behind …
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There is no need to ever close it so the safest way is just to spring it open, as long as the spring eventually holds it out of the way.
Lens caps haven't had a lot of luck in space.
On one mars mission it didn't open, on the next they fitted explosive bolts and it came off but landed on the surface just where the probe was going to rill into the ground.
Another infrared space telescope 10years ago the cap opened too soon while the telescope was pointed at the earth and boiled off all the coolant.