On Jan. 1, 2019, NASA's New Horizons spacecraft will ring in the New Year by making history: the first flyby of an object in the Kuiper Belt in the extreme outer solar system. See our full coverage of the flyby of Ultima Thule.
On Jan. 1, 2019, NASA's New Horizons spacecraft will ring in the New Year by making history: the first flyby of an object in the Kuiper Belt in the extreme outer solar system. See our full coverage of the flyby of Ultima Thule.
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