A planet with one side permanently roasting and the other frozen in endless darkness might still have a chance of supporting life. Researchers found that heat inside a tidally locked exoplanet could ...

Turns out the Nixon–Jackie Gleason alien legend is far from the only Hollywood close encounter.

Steven Spielberg once again made a movie that focuses on aliens coming to Earth, so it's probably worth watching some other ...

Get the latest federal technology news delivered to your inbox. You might think this column is about UFOs and the Pentagon's ...

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

NASA’s Viking 1 lander set down in the Chryse Planitia region of Mars. Its identical twin, Viking 2, followed on Sept. 3 of ...

WASP-121 b is an ultra-hot gas giant where supersonic winds reshape its atmosphere, and molten iron rains from the sky. Its ...

NASA’s James Webb Space Telescope has detected a carbon-rich atmosphere on a tiny world orbiting a dead, rapidly spinning star, and no existing model of planet formation can account for what the data ...

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

That sharp, briny smell is not the salt, it is a gas made by life, breathed out by tiny ocean creatures too small to see. For ...

The exoplanet telescope TESS revealed a distant world using an entirely different detection method than the one it was built ...

With new technologies come new opportunities. And that is especially true in astronomy—with every new advanced telescope, we ...