Astronomers find record-breaking haul of starless 'rogue' planets

Astronomers have discovered dozens of new "rogue" planets, roughly doubling the known number of these mysterious free-roaming worlds. A team of researchers found a collection of at least 70 exoplanets without parent stars — the largest single group of rogue planets ever found — in a patch of space about 420 light-years from Earth, a new study reports.
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