Explore ancient mysteries and theories about alien involvement in ancient civilizations, from the Nazca lines to Puma Punku.

Bill Maher recently fired shots at the Presidential Center opened by Barack Obama and his wife, Michelle Obama, in Chicago.

Astronomers have recently started looking for black holes bigger than galaxies. Brian Lacki explains how these “stupendously ...

What if consciousness isn’t limited to brains like ours? Philosophers Eric Schwitzgebel and Jeremy Pober argue that ...

In the second season of “Sugar,” Colin Farrell’s character has to deal with life alone. At the end of the first season, it ...

Somewhere out there, a planet roughly the size of Earth may be orbiting a distant star in conditions that could support life.

Our search for technosignatures—clear signs of advanced civilizations beyond Earth—takes many forms. Many are driven by the famous Drake equation, which attempts to estimate how many technological ...

From the Navy’s infamous Tic-Tac encounter to thousands of recent reports, believers say some of the strangest UFOs may be hiding underwater.

An image taken by Curiosity last month has sparked claims of a long-lost civilization on the Red Planet after some spotted a ...

In the book version of “Project Hail Mary,” author Andy Weir, known for grounding his fiction in plausible science, describes ...

Not every sci-fi show stands the test of time, but these are the classic sci-fi shows that are still worth watching today.

SPOILER ALERT: This story contains plot details, including about the ending, from DC Studios’ “Supergirl,” now playing in ...