Oh Carl...your "billions and billions" was off by a wee bit. - PeachParts Mercedes-Benz Forum

davidmash · #1 06-22-2022, 10:02 AM

Current estimated run in the several trillions of galaxies that exist. I find it hard to wrap my head around the number much less the the size of the universe to accommodate all of them. I wonder how many other places have someone staring up in the universe wondering who else is out there.

https://bigthink.com/starts-with-a-bang/galaxies-in-universe/

Quote:

If you take the deepest image ever created of the distant Universe, the Hubble eXtreme Deep Field, and extrapolate over the whole sky, you'd estimate there were ~170 billion galaxies in the observable Universe. A detailed theoretical simulation predicted far more faint, small galaxies than we've seen, upping the expected total to closer to 2 trillion. But recent observational evidence shows that even that estimate is far too low. Instead, there are between 6 and 20 trillion galaxies out there. Carl Sagan's "billions and billions" was far too low of a guess.