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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 ...
Planets usually stay close to their host stars, tracing steady paths shaped by gravity. Yet some planets break free and drift ...
A highly stylized rendition of our solar system NASA/JPL If someone asked which planet was closest to Earth, you’d be pretty certain — it’s Venus. We measure distances in the solar system in terms of ...
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