A faint signal from old telescope data is causing a stir in astronomy: a planet barely larger than Earth, with an almost ...

Astronomers have found nearly 6,000 exoplanets orbiting other stars. But for every confirmed detection, there are countless mere hints, inconclusive observations that could just as well be blips of ...

Astonishingly, we can identify molecules present in the atmospheres of exoplanets.

Scientists may need to broaden their horizons in their search for alien life.

The Search for Extraterrestrial Intelligence (SETI) focuses on finding technosignatures—potential signs of alien technology. If we look carefully, we might have a chance at detecting their ...

A recent conundrum about a star 1,500 light years away discovered by the Kepler Space Telescope has extraterrestrial enthusiasts crying "alien" as an explanation, but scientists studying the star are ...