Astronomers have finally weighed a wandering “rogue” planet, uncovering a Saturn-mass world flung into the galaxy after a dramatic planetary breakup.

Rogue planets — worlds that drift through space alone without a star — largely remain a mystery to scientists. Now, ...

Scientists have discovered a rogue planet roaming the Milky Way after combining observations from Earth and a space telescope ...

In a zesty new discovery, scientists have unearthed a strange lemon-shaped exoplanet. It is unlike one we have seen before, ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

Thanks to an enormous stroke of luck and serendipitous timing, astronomers were able to calculate the mass and distance of a ...

Astronomers at the Center for Astrophysics | Harvard & Smithsonian have captured what may be the biggest planet-forming disk ...

There are a couple of ways that scientists can date planets, so which planets formed first in our solar system? When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

By tracking tiny stellar wobbles, astronomers have detected planets forming around young stars for the first time.

Using observations from both ground-based telescopes and space instruments, they were able to measure the planet's size and ...

A giant impact on the early Earth could have brought the building blocks of RNA to our planet, which new research suggests ...

Astronomers have spotted a lonely world roughly the size and mass of Saturn, drifting through the Milky Way without a star to ...