In the season 2 episode "Mirror, Mirror," Star Trek perfected the alternate universe trope long before Hollywood's multiverse ...

The universe is a strange, beautiful place—rich with possibilities and governed by the odd rules of quantum mechanics. One of the most mind-bending ideas from this realm is the many-worlds ...

Let's explore the possibility of traveling to universes beyond our own — if they so exist, that is. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...