Just months after 9/11, strange messages started appearing across U.S. military computers: “Your security system is crap.” ...

The Hubble Space Telescope has made multiple observations of exoplanet WASP-121 b, also known as Tylos. The extreme ...

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

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

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the Trump administration to ...

A fatal Tesla Autopilot crash led to a yearslong fight over missing data, becoming one of the most consequential lawsuits in ...