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en.wikipedia.org/wiki/Cold_welding

Cold welding or contact welding is a solid-state welding process in which joining takes place without fusion/heating at the interface of the two parts to be welded. ... that two clean, flat surfaces of similar metal would strongly adhere if brought into ... is no way for the atoms to “know” that they are in different pieces of copper.

www.coolsciencefacts.com/2006/metal.html

In space, if unprotected pieces of metal touch each other, they stick together ... This doesn't happen on Earth, because the oxygen in our atmosphere forms an ... If the atoms of two metal objects come in contact with each other, what you ...

www.quora.com/If-two-metals-touch-in-space-they-fuse-Why

I'd second the notion that objects spontaneously sticking in vacuum ("cold welding") is not ... In space, if unprotected pieces of metal touch each other, they stick together permanently. This doesn't happen on Earth, because the oxygen in our atmosphere forms an extremely thin film of oxidized metal on every exposed  ...

www.mindblowing-facts.org/2013/01/if-two-pieces-of-metal-touch-in-space-they-get-stuck-together-permanently

If two pieces of metal touch in space, they get stuck together PERMANENTLY. ... On the contrary, it is also believed that nothing of this sort actually happens.

physics.stackexchange.com/questions/261587/if-two-pieces-of-the-same-type-of-metal-touch-in-space-will-they-bond-and-be-pe

Jun 9, 2016 ... It all depends on how clean the surface of the metal are. If there are oxides and impurities on the surfaces they will not bond together. However ...

scientificliteracymatters.com/2017/04/if-two-pieces-of-metal-touch-in-space-they-stick-together-permanently

Apr 25, 2017 ... This doesn't happen on Earth, because the oxygen in our atmosphere forms an extremely thin film of oxidized metal on every exposed surface.

www.reddit.com/r/explainlikeimfive/comments/3lokbw/eli5_snapple_cap_real_fact_1003_if_two_pieces_of

... If two pieces of the same type of metal touch in outer space, they will .... The reason this doesn't happen on earth is because the outer layers ...

www.ask.com/youtube?q=What+Happens+To+Two+Pieces+Of+Metal+If+They+Touch+In+Space%3F&v=Yx6bk0qgl3s
Aug 2, 2011 ... If you had two pieces of metal with perfectly matched surfaces in a vacuum you could weld them by just touching them together. ... Does this happen in space? ... /4169/how-is-the-unwanted-cold-welding-prevented-in-space ... begin to touch each other, at which point they bond. if you force two pieces of ...

www.howitworksdaily.com/do-metals-fuse-together-in-space

Sep 25, 2013 ... Discover if metals can fuse together in space now by reading on. ... In practice, this rarely happens on Earth because most metals form a protective oxide ... of course, if you deliberately polished it off then, yes, the two metals would fuse together, ... Tags: cold, do they, fuse, metals, Space, together, welding ...