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nounDutch astronomer who proved that the galaxy is rotating and proposed the existence of the Oort cloud (1900-1992)
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Definition that contains oort
- oort Dutch astronomer who proved that the galaxy is rotating and proposed the existence of the Oort cloud (1900-1992)
- jan hendrix oort Dutch astronomer who proved that the galaxy is rotating and proposed the existence of the Oort cloud (1900-1992)