Astronomers have long been puzzled by a cosmic mystery: planets orbiting two stars—like Star Wars’ Tatooine—are surprisingly rare, even though they should be common. New research suggests the culprit ...

Scientists have discovered unexpected water-ice clouds on a distant, Jupiter-like exoplanet, challenging current atmospheric ...

Scientists identify 45 potentially habitable exoplanets, using exact data and quotes to guide future telescopes in the search ...

NASA unveiled a new telescope on Tuesday to scan vast swaths of the universe for planets outside our solar system and probe ...

A giant planet circling a nearby star has given astronomers a rare look at what a colder, more Jupiter-like world can be like ...

A strange planetary system called TOI-201 is changing in real time, with three very different worlds pulling on each other.

Scientists have developed an 'agnostic biosignature' method to search for extraterrestrial life by identifying statistical patterns in traits across many planets. The approach assumes life can spread ...

The Artemis II mission, which took four US astronauts around the Moon and to a record-breaking distance from Earth, was a ...

Far beyond the reach of any spacecraft, a distant world glows with heat so intense that rock itself turns to vapor. In that ...

For several days this month, Saturn, Mars, and Mercury appear just degrees apart before sunrise—close enough to watch their ...

Six planets are hanging out in the sky this month in what’s known as a planetary parade. Catch the spectacle while you can because it’s the last one of the year. These linkups happen when several ...

Unfortunately for science fiction fans, desert worlds outside our solar system are unlikely to host life, according to new ...