The late Professor Stephen Hawking had a chilling "dark forest" theory about alien life 15 years ago – and it could be more plausible than ever. Earlier this year his predictions about aliens ...

Was it an alien probe sent to observe us? A piece of advanced technology using our Sun for a gravitational boost? For weeks, speculation has swirled around 3I/ATLAS, the third known interstellar ...

A comet that is likely much, much older than our solar system has spent months traipsing through Earth's cosmic neighborhood. And at long last, NASA has unveiled an unprecedented look at the object, ...