How the Universe grew up… and stopped. But for the Universe, although it’s constantly changing, growing in a gravitational sense is a thing of its past. Sure, we continue to form new stars, galaxies continue to merge, and the structure we see on the largest scales continues to evolve. But there once was a time when there were no stars, no galaxies, and no groups or clusters. These all formed, so at some point, the Universe was able to build these structures where there were none before. But today, everything that isnt already gravitationally bound to itself never will be.
Posted on: Sat, 18 Oct 2014 18:36:14 +0000
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