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

Astronomers have signalled the discovery of a planetary body roaming the Milky Way that is not gravitationally bound to the ...

Astronomers have, for the first time, pinned down both the mass and distance of a planet that drifts through the galaxy ...

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

Astronomers have finally pinned down the mass and distance of a lonely world that drifts through the galaxy without a parent ...

A lucky alignment of space- and ground-based telescopes has enabled researchers to nail down the mass of a rogue planet for the first time. Unlike worlds in our Solar System, rogue planets do not ...

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

Astronomers have detected a rogue planet, not orbiting any star, flying through space. The planet's mass and distance were calculated using gravitational microlensing.

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

Simultaneous ground- and space-based observations of a newly discovered free-floating planet have enabled direct measurement of its mass and distance from Earth, according to a new study. The findings ...