Questions tagged [gas]

Questions regarding matter in its gaseous state, and how it behaves in astronomy (e.g. forming stars in giant molecular clouds).

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Specific impulse of cometary outgassing?

Note: This question is related to Average DeltaV applied to a comet during outgassing? Rocket engines have a parameter called "specific impulse," which is the measurement (in seconds) of how ...
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Are there gas clouds in space so dense that we couldn't see out of them if one where to be inside it?

The images of telescopes capturing gas clouds are quite intriguing to me, which keeps me wondering about visibility inside them. Are there gas clouds in space so dense that we couldn't see out of them ...
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shape of gas and shape of stars

How does the shape of the gas and shape of stars change as the galaxy ages? Does there exists any such formula which relates the shape/volume with the time?