Home » News & Blogs » Ask Ethan: Why Haven’t We Bumped Into Another Universe Yet?
Bookmark and Share
Starts With a Bang!

Ask Ethan: Why Haven’t We Bumped Into Another Universe Yet?

3 Mar 2018, 15:01 UTC
Ask Ethan: Why Haven’t We Bumped Into Another Universe Yet? Lee Davy / flickr

The Universe we inhabit is vast, full of matter and energy, and expanding at a tremendous clip. Looking billions of light years away, we can see billions of years into our ancient past, finding evidence of newly-forming planets, stars, and galaxies. We’ve seen so far back that we’ve identified clouds of gas that have never yet formed a single star, and found galaxies from when the Universe was only 3% of its current age. Most spectacularly, we can actually see the leftover glow from the Big Bang, from a time when the Universe was a mere 380,000 years old. Yet in all of this cosmic enormity, we’ve never found evidence that our Universe has bumped into another one in this vast Multiverse. Why not?

Latest Vodcast

Latest Podcast

Advertise PTTU

NASA Picture of the Day

Astronomy Picture of the Day

astronomy_pod