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 hundreds of times heavier than Earth. For a brief ...

Three researchers recently published a paper speculating about whether an object (likely a comet) could be "hostile" alien technology Scientists estimate the object to be more than 12-miles-wide, speeding at 37 miles-per-second, relative to the sun One ...

Alien life may be hiding much closer to home than science fiction would have us believe, according to a particle physicist and dark matter researcher Dr Sarah Alam Malik, who argues that Saturn's moons Titan and Enceladus,

The so-called 'planetesimal belts' are filled with tiny millimeter-sized particles created by collisions between comets. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Rings of comets have been ...

Life may not get blasted off any of the known "super-Earth" worlds as readily as it can from our planet, scientists find. The discovery suggests that any intelligent aliens that develop on such planets might find it hard to rocket off them and travel to ...

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