The physicist Fabian reasoned that as intergalactic gas cools, the cooler gas shrinks inward toward the center of the galaxy.
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Related: galaxy
Prev: According to previous speculation, these strands were gases that had been blown out by an explosion in the galaxy.
Next: Meanwhile, its place is taken by hotter intergalactic gas from farther out on the edge of the galaxy, which cools as it is compressed and flows into the galaxy.
