Our search for extraterrestrial life has turned up empty, perhaps because technologically advanced civilizations are doomed ...

The search for alien life often assumes discovery would be exciting or hopeful. But there are darker possibilities most people avoid discussing. This video explores five disturbing scenarios that ...

Solar winds near aliens’ homes – and ours – might be blowing away signs of alien technosignatures by broadening signals The SETI Institute, the nonprofit that conducts a search for extraterrestrial ...

For over six decades, the Search for Extraterrestrial Intelligence (SETI) has been tirelessly scanning the cosmos for signs ...

Assuming intelligent aliens know how to harvest energy from stars, would humanity be able to spot these high-level structures?

But the creepiest layer of Marathon ’s mythology involves entities called the W’rkncacnter — primordial forces of chaos so dangerous they were imprisoned inside stars, black holes, and only ...

A Harvard physicist who once accepted evolution without question says a surprising encounter with faith forced him to rethink ...

Stellar plasma can smear alien radio signals before they escape their star system, making them harder for astronomers to detect.

"Stargate SG-1" became a sci-fi fan favorite, resulting in one of the longest-running genre series ever. We've picked five of ...

Discover Coral Castle in Florida, a mysterious stone monument built by one man that still puzzles visitors with massive blocks, moving gates, and hidden secrets.

Herman Rovelo-Gallegos fled to the U.S. six years ago with his wife and young children from Honduras, where he said gangs killed his brother and tried to kill him, too. In the U.S., Rovelo-Gallegos ...