If the Universe were to undergo a vacuum decay event, where we transitioned from a false vacuum to a true vacuum state, the fundamental laws and properties of the Universe would change, destroying all forms of matter thant we know. A bubble of destruction would move outward at the speed of light, and if we were located within 18 billion light-years of such an event, it would destroy us, too. (Credit: public domain/pxfuel)

Ask Ethan: What if the Universe lives in a false vacuum state?

There’s a big difference between the notions of ‘false vacuum’ and ‘true vacuum’ states. Here’s why we don’t want to live in the former.

One of the great existential worries that plagues the minds of theoretical physicists is that the vacuum of space might not be in…

--

--

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Ethan Siegel

Ethan Siegel

163K Followers

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