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For 1st time, astronomers measure mass and distance of a rogue planet

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

A Rogue Planet the Size of Saturn Detected 10,000 Light-Years From Earth

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