For generations, artists and science-fiction writers have imagined alien landscapes beneath twin sunsets. The image became ...

Small, rocky planets can coalesce around a wide variety of stars, suggesting that Earth-like alien worlds may have formed early and often throughout our Milky Way galaxy's history, a new study reveals ...

The findings of a new study may help "explain some of the radio silence we’ve seen in technosignature searches" for alien ...

A nutrition scientist applies metabolism, biology and food science to one of science fiction's oldest questions.

The air around a few planets beyond our solar system is leaking away into space, causing these worlds to get smaller, astronomers reported on Nov. 15. And these planets' atmospheres aren't getting ...

The winds on seven hellish alien worlds are moving in the wrong direction. That strange anomaly just cracked open one of ...

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, ...

Planets orbiting stars beyond the solar system come in all shapes and sizes but mostly fit into a few categories: large and hot gas giants, super-Earths that are slightly larger than our planet, ...

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

Scientists say extraterrestrial life may exist elsewhere in the universe, but vast distances, enormous energy requirements ...