Humans should look to planetary alignments outside of the solar system when searching for signatures of extraterrestrial communications, scientists say. The nascent search for radio transmissions from ...

Far beyond the reach of any probe, astronomers have found a gas giant whose atmosphere behaves less like a familiar planet and more like a special effect from a big-budget space epic. Orbiting a ...

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 ...