Billions of years ago, while the solar system was still young, a massive object may have drifted into it. It's not a spaceship, but it is an alien visitor in its own right—a colossal interstellar body ...

Interstellar visitors don’t have this problem because they were never part of the solar system’s plane to begin with. ʻOumuamua entered from above the ecliptic in 2017 on a steeply tilted trajectory, ...

The SETI Institute is the latest to confirm what scientists have long suspected: the interstellar 3I/ATLAS comet is not an ...

The object, called 3I/ATLAS, is only the third interstellar visitor ever detected passing through our Solar System.

Here’s what you’ll learn when you read this story: Every time an interstellar object comes whizzing into our Solar System, it brings with it a certain intrigue. Where is it from? How did it form? Why ...

Scientists have searched one of the only known visitors to us from another solar system for signs of alien technology – and ...

To travel between solar systems, a spacecraft would need extremely sophisticated – if not impossible – technology.

Should we be concerned? According to Neil deGrasse Tyson, folks are buzzing about a “possible alien flyby in the next six to seven weeks” thanks to a massive celestial object exhibiting unusual ...

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life.