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

Yes, Planet Fitness will be open on New Year’s Day. Most gyms will be open during regular hours from 5 a.m. to 12 a.m., so ...

While most planets that we are familiar with stick relatively close to their host star in a predictable orbit, some planets ...

Astronomers just measured the mass of a free-floating planet without a star for the first time ...

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

In doing so, they found this orphan is within the same weight class as Saturn, strengthening the case that the galaxy teems ...

For the first time since Pluto was demoted, the idea of a true ninth planet is edging from speculation toward something ...

Planet, best known for providing geospatial intelligence through its satellites, sees an opportunity in orbital data centers ...

Most of the planets we’ve identified are in orbit around stars and formed from the disks of gas and dust that surrounded the ...

What seemed like new planets around Fomalhaut were actually expanding dust clouds from violent planetary collisions seen by Hubble.

The James Webb Space Telescope detected an atmosphere on a lava-covered exoplanet, evidence that small planets close to stars ...

New images from NASA 's Hubble Space Telescope have revealed an enormous, oddly shaped disk of gas and dust around a single ...