If two pieces of the same bare metal touch in the vacuum of space, they permanently fuse together without heat or glue.
Called 'cold welding,' this happens because Earth's oxygen normally forms a thin barrier on metal. Without air or oxidation in space, atoms on both surfaces share electrons and bond into one solid piece.
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Quick Guess: What is the phenomenon where clean metals bond without heat in a vacuum called?
Verified Answer: Cold welding
Quiz Question: What is the phenomenon where clean metals bond without heat in a vacuum called?
Correct Answer: Cold welding
Without air or an oxide barrier, metal atoms bond directly on contact in a process called cold welding.
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