So even if the bubble hits you, you don’t know. You don’t feel it because your nerve impulses don’t travel that fast. You wouldn’t see it coming because if it happens at the speed of light, you can’t see it approach. And that bubble can expand out at the speed of light and destroy everything in the cosmos. And that event will create a bubble of a different kind of space. And that’s where basically you can have a kind of quantum event happen somewhere in the universe. “The one that I think is the most interesting is called vacuum decay. The universe is changing, is evolving and it’s evolving into someplace that’s going to be more and more diffuse, and less and less capable of harboring structures like what we see out there now.” How will it end? In the book, Mack outlines five possibilities. And there are some very dramatic possibilities for how the universe might end, but there’s really no serious suggestion in the cosmological literature that everything will just kind of carry on just fine as it is now. “And there are a few possibilities for what can happen as that carries forward. And at some point, I started reading about black holes and the big bang and space-time and all that. When I was a little kid, I was always trying to take things apart and put them back together to figure out how they worked. I’ve been interested in space and physics since as long as I can remember. And then fewer structures kind of in the universe in general.”

We have galaxies interacting with each other, making new stars, but in the far future if the universe keeps expanding the way we see it expanding now, then those processes will slow down. “I mean, right now our universe is kind of very habitable sort of place. “One of the things we really see very clearly in our observations of the universe is that it’s changing,” Mack says. Download file | Play in new window | Duration: 18:32 | Download transcript How will the universe end? Katie Mack, cosmologist and author of a new book entitled, “The End of Everything,” talks about universe-ending scenarios and how astrophysicists know what they know about the universe.

The end of everything katie mack