Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House ...

The scientific search for extraterrestrial life is almost entirely focused on biosignatures, radio signals, and microbial ...

The question of whether humanity is alone in the universe has fascinated scientists for generations, but few have pursued an ...

A controversial Harvard University cosmologist who has suggested alien lifeforms could be sailing into the solar system disguised as meteors is leading the Trump administration’ ...

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

God and aliens are having a moment. But what do Christianity and other faiths really teach about ETs?

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As much as Steven Spielberg likes aliens, he seems to prefer holding them at arm’s length. The creatures in Close Encounters ...

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...