For as long as humans have looked toward the stars, one question has remained unanswered: how did life begin? Scientists have ...

For a world to maintain an atmosphere long enough for life to gain a foothold, it seems it needs to be at least as big as ...

A recently discovered "super Earth" located around 25 light-years from our planet is not as massive as previously thought, raising the chances that it has the conditions to support life.

If you were hoping we’d find alien life hanging out on a cozy, pint-sized planet anytime soon, then you should know that ...

NASA’s Curiosity rover has once again found itself at the center of an extraordinary alien theory after a resurfaced image ...

NASA plans to launch the Habitable Worlds Observatory in the 2040s, a mission whose goal is “to image Earth-like planets around other sun-like stars,” according to NASA’s website.

A new study suggests that if extraterrestrial life exists, it’s likely being lived on this exoplanet. Astronomers have ...

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

English science fiction writer Arthur C. Clarke once said, “Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.” It’s a line that has motivated ...

The nature of space, time and the evolution of life on Earth mean it’s unlikely extraterrestrial life has visited our home planet.

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. The Milky Way galaxy has more than 400 billion stars in it. Over the last few decades, ...

There’s no data to suggest that aliens exist. However, if we believed they existed and came to Earth, our planet would offer them a somewhat risky buffet. There is liquid water, as well as salts, ...