Thomas Mulligan explores the scientific limits and cosmic reach of Earth’s biological signals, revealing how far into the universe our presence can truly be sensed by extraterrestrial observers.

Thousands of people have reported UFOs or alien encounters in Northern California. That number could soon go up.

Tracey Ullman, Sam Spruell, & Jerome Flynn join the cast of FX's Alien: Earth's second season, which just kicked off ...

Rocky from Project Hail Mary may be lovable, but the science behind him is far stranger than most movie aliens. Andy Weir ...