Artist’s logarithmic scale conception of the observable universe. Galaxies give way to large-scale structure and the hot, dense plasma of the Big Bang at the outskirts. Trying to figure out how many galaxies exist within the Universe is one of the great cosmic quests of our time. (WIKIPEDIA USER PABLO CARLOS BUDASSI)

This Is How We Know There Are Two Trillion Galaxies In The Universe

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Ethan Siegel

Ethan Siegel

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The Universe is: Expanding, cooling, and dark. It starts with a bang! #Cosmology Science writer, astrophysicist, science communicator & NASA columnist.