There is no bigger question than whether the universe is all there is. Scientists are juggling several ideas for what a multiverse, if one exists, might be like. Our universe could be one bubble in a ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Paul M. Sutter is an astrophysicist at The Ohio State University, host of "Ask a Spaceman" and ...

What lies beyond all we can see? The question may seem unanswerable. Nevertheless, some cosmologists have a response: Our universe is a swelling bubble. Outside it, more bubble universes exist, all ...

FOR an experiment designed to help us find evidence of other universes, it looks surprisingly modest. As Zoran Hadzibabic walks me into the lab, it feels more like a classroom, complete with linoleum ...