Modern astrobiology suggests that alien life would evolve under many of the same ruthless pressures that shaped organisms on ...

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

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 ...

Yuki Ikeda's four-year manga series launched its anime adaptation on Netflix worldwide today, and the premise hiding behind its cute-vs-gritty visual contrast turns out to rest on a coherent argument ...

Explaining the passage of time has been a gnarly problem in physics basically forever, but physicist and computer scientist ...

Eventually, we'll launch a mission dedicated solely to studying an interstellar object. When that day comes, which one should ...

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: ...

Professor Carol Oliver suggests that time dilation, a cosmic phenomenon, may deter aliens from visiting Earth, as ...

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

Harvard astrophysicist Avi Loeb has been appointed as the head of a new White House group to study UFOs, or unidentified ...

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