Could a lonely planet wander aimlessly through the restless galaxy change the subtle dance of gravity within our solar system ...

Astronomers have made an unexpected and groundbreaking discovery in our solar system—a ring system forming around Chiron, a ...

Voyager 1 has been exploring the cosmos for decades, but when it reached the edge of the solar system, it found something ...

While Saturn 's magnificent rings, spanning 175,000 miles (280,000 kilometres), are a familiar celestial marvel, scientists ...

Thirty years ago this week, two Swiss astronomers announced that they had spotted the first known planet orbiting a Sun-like ...

A mysterious space object named 2023 KQ14, nicknamed “Ammonite,” challenges theories about the mysterious and possible Planet ...

ALMA captures surprising activity in comet C/2014 UN271, Bernardinelli-Bernstein comet, the largest ever detected.

Astronomers have discovered a "fossil" body residing on the outskirts of the solar system, according to new research. The object – which goes by the formal designation 2023 KQ14 but is nicknamed ...

A new planetarium show at the American Museum of Natural History depicts a spiral in the Oort Cloud, a region far beyond Pluto that’s full of icy comets. (American Museum of Natural History) NEW YORK ...

Astronomers have discovered seeds of rocky planets forming in the gas around the baby sunlike star providing *** peek into the start of our own solar system. The the thing that we've discovered is ...

Skywatchers can catch a rare glimpse of Comet Lemmon this month, and it won't be back until around the year 3175. Here's how ...

This is peculiar, but it is not the first marshmallow planet discovered. Others have sported this extreme low density. What's ...