‘Terra Incognita’ -What Lies Beyond the Observable Universe?

  It’s possible that the universe isn’t uniform past what we can see, and conditions are wildly different from place to place, says Caltech astrophysicist Sean Carroll. “That possibility is the cosmological multiverse. We don’t know if there is a multiverse in this sense, but since we can’t actually see one way or another, it’s … Continue reading ‘Terra Incognita’ -What Lies Beyond the Observable Universe?