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  1. NASA’s Planetary Defense Telescope NEOWISE Burns Up In Atmosphere

    NASA’s Planetary Defense Telescope NEOWISE Burns Up In Atmosphere

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  2. 65 Million Years Ago? Part 2. Apophis 99942 is coming.

    65 Million Years Ago? Part 2. Apophis 99942 is coming.

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  3. The Tunguska Event: Earth’s Greatest Cosmic Mystery

    The Tunguska Event: Earth’s Greatest Cosmic Mystery

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