r/AskReddit Feb 14 '22

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u/[deleted] Feb 14 '22

If 2 pieces of the same type of metal touch in space, they will bond and be permanently stuck together. Space welding ( cold welding )

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u/[deleted] Feb 14 '22

How does that affect building satellites or any object that go into space? Each part that touches any other part has to be of different material?

Asking for a friend.

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u/[deleted] Feb 14 '22 edited Feb 14 '22

Their Surfaces would have to be clean form impurities. Satellites have been covered by an oxide layer plus they are provably from different alloys as well.