Anthony Mennella follows a comedic alien encounter inside a home that leaves viewers questioning what is real.

Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

Thus far, our search for extraterrestrial life points toward Clarke’s former point, suggesting that our little blue dot is ...

"Eventually, our own Voyager spacecraft will be extraterrestrial artifacts in other stellar systems." ...

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

An unidentified DNA sample found on one of Sophie Toscan du Plantier’s boots has returned to the heart of the case almost 30 ...

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the White House to lead a ...

While telescopes like the James Webb Space Telescope (JWST) can detect the chemical fingerprints of distant atmospheres, ...

A comet screaming in from another star system carried alien ice ratios never seen before. What scientists found inside its spinning nucleus is reshaping how we picture worlds beyond our sun.

Vanity Fair reports from the Capitol Hill conference, where members of a sprawling community of national security experts and ...