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Does our solar system have a new dwarf planet?

On May 21, the International Astronomical Union's Minor Planet Center announced the discovery of 2017 OF 201, which, because of its distance beyond Neptune, is classified as a trans-Neptunian object ...
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Asteroid with potential of smashing into Earth spotted by scientists - before object revealed to be something very different

Harvard astronomers were left red-faced after mistaking Elon Musk's orbiting Tesla Roadster for a potentially dangerous asteroid, scientists admitted yesterday. The Minor Planet Center in Cambridge, ...