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CosmosUp | May 26, 2019

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Top 5 Cool Facts About Space

By | On + -
1

Cold Welding
If two pieces of metal touch in space, they become permanently stuck together


This may sound unbelievable, but it is true. Two pieces of metal without any coating on them will form in to one piece in the vacuum of space. This doesn’t happen on earth because the atmosphere puts a layer of oxidized material between the surfaces.

This might seem like it would be a big problem on the space station but as most tools used there have come from earth, they are already coated with material. In fact, the only evidence of this seen so far has been in experiments designed to provoke the reaction. This process is called cold welding.

For those who still don’t believe it, here is the Wikipedia article on Cold Welding.

Source: Listverse.

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