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Definition of Oort, Jan in English: Oort, Janproper nounɔːtôrt (1900–92), Dutch astronomer; full name Jan Hendrik Oort. He proved that the Galaxy is rotating, and determined the position and orbital period of the sun within it.
Definition of Oort, Jan in US English: Oort, Janproper nounôrt (1900–92), Dutch astronomer; full name Jan Hendrik Oort. He proved that the galaxy rotates and determined the position and orbital period of the sun within it.
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