In a first, astronomers imaged a baby planet within a gap in the disk of material around a star, confirming predictions about how rings form.

Astronomers have discovered a giant Saturn-sized planet orbiting TOI-6894, the smallest star ever known to host such a world.

Early Earth may not have had the right ingredients for life — until a nearby Mars-size planet crashed into it, two new studies hint.

One of the brightest stars in the night sky seems to be orbited by a planet like Jupiter. The news is sure to cheer fans of ...

Six planets are hanging out in the sky this month. It’s what’s known as a planetary parade and it’s the last one of the year.

The discussion underscored how citizen scientists, by contributing thousands of data points from around the world, are ...

Sometimes in science a negative result is just as important as a positive one. And sometimes data artifacts get the better of ...

Scientists may have found the first planet ever detected around our closest “solar twin,” a star called Alpha Centauri A, the ...

What can lava planets, rocky exoplanets that are tidally locked and orbit so close to their stars that the intense heat melts the surface, teach astronomers about planetary formation and evolution?

Even if life never took hold on Ceres, the discovery could help broaden the range of environments that could potentially be habitable.

Get ready to explore the Red Planet — our dusty, windswept neighbor that's captured human imagination for centuries. Mars is ...

Six planets will be visible in our skies for the next few days in the last “planetary parade” of 2025. Jupiter, Mercury, ...