A Hundred Billion Galaxies

(Slate::Bad Astronomy) – Phil Plait:

Perhaps you’ve heard that there are a hundred billion galaxies in the Universe. That’s a soul-crushing number, so vast and unreachable that it’s literally hard to believe.

Let me make a believer out of you.

This photo is from the venerable Hubble Space Telescope. It’s part of a colossal effort by astronomers, dubbed the Frontier Fields program, to peer as deeply as possible into a half-dozen galaxy clusters, veritable cities of galaxies that can contain thousands of galaxies like our own. …

bad_astronomy/2016/04/07/hubble

Galaxies at Pandora’s Cluster

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