Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Last year, an interstellar traveler entered our solar system. Some speculated that it was an alien spacecraft, but it turned ...

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

Steven Spielberg's claims that aliens have already visited Earth have drawn a mixed but pointed scientists' reaction this week, with astrophysicists in the UK and Australia stressing that while ...

This new group, which is led by Harvard professor Avi Loeb, aims to advise the Trump administration and the U.S. intelligence ...

Add Yahoo as a preferred source to see more of our stories on Google. The night sky looks crowded, but physics may keep distant civilizations from ever meeting or even noticing one another. (CREDIT: ...

This video explores what alien life might actually look like if evolution, physics, and planetary environments are allowed to ...

Angine de Poitrine don't abide by the usual rules of Western music, using their own custom-built guitar to strike notes that ...

A new SETI study argues that turbulent space weather around distant stars can smear out ultra‑narrow alien radio signals, ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals . Unexplained gases on other planets. Things mistaken for UFOs ...

The pilots dubbed the fireballs “foo fighters” but had no idea what they were. Plasma? Enemy tech? Aliens? We still haven’t ...

This video explores obscure answers to the Fermi Paradox, asking why the universe seems silent if alien civilizations should ...