For the first time, astronomers have directly measured the mass of a rogue planet, a celestial body wandering through space ...

Scientists measured mass and distance of free floating planet drifting through space without star for first time.

Planets usually stay close to their host stars, tracing steady paths shaped by gravity. Yet some planets break free and drift ...

The team has estimated that the planet is about 22 percent the mass of Jupiter, so roughly a Saturn-sized world. It is ...

At least that's what the most current map shows. Astronomers have mapped the most extensive atlas of our Milky Way galaxy yet, including the positions of each and every one of those stars. The ...

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

Ever wondered how planetary systems like our own solar system form? Thanks to the European Space Agency's Gaia space telescope, we're getting a unique peek behind the cosmic curtain into these dusty ...

On Jan. 15, 2025, the Gaia spacecraft took its last image. Then the craft ran a final round of engineering tests, fired its ...

We share some incredible images this week, featuring a range of spacecraft. NASA's MRO finds a new crater on Mars, ESA's ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. The European Space Agency’s (ESA) Gaia space telescope has ...

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

Astronomers believe the free-floating planet is around 22 percent the mass of Jupiter and lies 3,000 parsecs from the Milky ...