Jan Oort is a Dutch astronomer for whom the Oort Cloud is named after (The Chessmen of Doom, 67).


Jan Oort was a Dutch astronomer who determined that the Milky Way rotates and overturned the idea that the Sun was at its center. He also postulated the existence of the mysterious invisible dark matter in 1932, and discovered the galactic halo, a group of stars orbiting the Milky Way but outside the main disk.  Additionally Oort is responsible for a number of important insights about comets, including the realization that their orbits "implied there was a lot more solar system than the region occupied by the planets."[1]


  1. Wikipedia: Jan Oort
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