Explore 1 historical events and records for Netherlands in 1932.
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Oort was studying stellar motions in the local galactic neighbourhood and found that the mass in the galactic plane must be greater than what was observed. Dark matter is postulated by Jan Oort based upon insufficient evidence, to account for the orbital velocities of stars in the Milky Way
Generated from the World History Database historical_events table. Identical display records are collapsed; descriptions otherwise retain the stored text. Coverage and source quality vary. Check primary and specialist sources before citing individual historical claims.