What if the universe has shortcuts?

Theoretical “tunnels” in spacetime—often called wormholes—could connect distant parts of the cosmos in an instant. Instead of traveling for millions of years, you’d step through a cosmic doorway.

But are these passages mathematically possible, or physically real? Could they stay open without collapsing? And if they exist… what would happen if we entered one?

Learn more about your ad choices. Visit megaphone.fm/adchoices