Astronomers discover a cosmic 'fossil' at the edge of our solar system. Is this bad news for 'Planet 9'?
Space.com   a day ago
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Astronomers discover a cosmic 'fossil' at the edge of our solar system. Is this bad news for 'Planet 9'?  SpaceDiscovery and dynamics of a Sedna-like object with a perihelion of 66 au  NatureMeet ‘Ammonite’ — A New World Just Found In The Solar...