Our Universe, Now 10x to 20x More Robust


George Dvorsky citing some new numbers set to be published in the Astrophysical Journal:

The observable universe—that is, the part of the universe that’s visible to us on Earth—contains 10 to 20 times as many galaxies than previous estimates. That raises the total to somewhere between one and two trillion galaxies, which is up from the previous best estimate of 100 billion galaxies. Consequently, this means we also have to update the number of stars in the observable universe, which now numbers around 700 sextillion (that’s a 7 with 23 zeros behind it, or 700 thousand billion billion).

Two trillion galaxies. 700 sextillion stars. And that's just the observable universe.


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