Date: Prior to 1993
Does space have oxygen? If it does not, how does the sun burn?
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.
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Update: June 2012