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Question:
Does space have oxygen? If it does not, how does the sun burn?



Replies:
The sun is like a continuously exploding H-bomb: it burns by thermonuclear fusion reactions, that is, it emits energy by fusing hydrogen nuclei into helium nuclei. You are right, space does not have oxygen, that is why airplanes cannot fly into space and astronauts have to wear spacesuits.

John Hawley


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