On Earth, you need a lot of heat to weld two pieces of metal together. But in space, metal acts very differently. Find out how this makes space travel tricky in the video below.
Cold welding is not the futuristic metalworking technique it sounds like.
How Does Welding Work?
Here's how welding happens on Earth.
How Metal Can Fight Bacteria
Check out another little-known power metal possesses.
Written by Curiosity Staff October 31, 2016
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