We frequently question whether we are alone in the universe. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. This article was originally ...

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, ...

The buzz around interstellar object 3I/ATLAS—hypothesized by some to be anything from an exotic comet to a piece of alien technology—is likely to take another unpredictable turn, with a new image ...

Any time NASA notices something unusual traveling across the galaxy, we collectively perk up and give it our full attention. Speculation is rampant that alien life is coming to visit us here on Earth ...