Sound does not travel in space.
Why it is true
Sound waves are mechanical and need a medium (like air) to vibrate. Since space is a vacuum, there is no sound.
Source: Physics
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This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.