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.

Before his death, Stephen Hawking consistently warned humanity against contacting aliens. As interest in UFOs and little ...

A look into the Serapeum in Egypt - dozens of gigantic granite coffins with no clear purpose.

If you're new to "Star Trek," or a longtime fan looking to relive some old episodes, here are the best ones from "The ...

This will be a busy summer for Boston, with the FIFA World Cup, July Fourth and the 250th anniversary of the nation’s founding. Adding to the festivities: more than 50 tall ships from around the world ...