Dear Live From the Sun, If sunspots have a strong magnetic field, then how come the Sun doesn have an atmosphere?
Charleston Middle School, Charleston, IL ANSWER: The Sun is made of gas, so it does have an atmosphere, but it is not one that we could breathe in. To hold on to an atmosphere, you need gravity, not magnetic field. Small moons cannot have atmospheres because their gravity is so low that any gases near them would quickly escape into space.
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