Astronomy Cast Ep. 636: Blowing Bubbles
Astronomy Cast Ep. 636: Blowing Bubbles by Fraser Cain & Dr. Pamela Gay We think of space as a vacuum, but there are regions of different density. There are winds blowing from stars and other objects that clear out vast bubbles in space, and look absolutely fantastic in pictures. And they might have been critical for Earth to even exist in the first place.
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