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

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

DEWs will provide a cheaper alternative for the U.S. military to knock out some threats, but could they be misused?

An instrument on the Perseverance rover has identified large, complex carbon compounds alongside unusual patterns on the ...

Instead of searching the skies for radio signals, scientists suggest the first evidence of an extinct alien civilisation ...

Once small enough, these technograins might gain a trip out of its host solar system by a solar wind that overcomes the ...

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 ...

NASA briefings mention an apparent "alien star base" on the Moon, the latest trove of UFO files has revealed. Audio from a previously classified NASA meeting following the Apollo 16 mission in the ...

For roughly the first three decades of his career, Spielberg tended to take a fairly sanguine view of aliens, refusing to succumb to the disaster-movie framework of aliens attacking terrified ...

Previous landmark scientific discoveries like the Higgs boson provide a better template for what it will take to confirm whether aliens have made contact with Earth.

Half a century after "Close Encounters of the Third Kind," the director returns to the subject of UFOs with "Disclosure Day." His science fiction films are informed by his fascination with alien encou ...