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5h 45min, jan 1, 1919 y - Hubble joins the staff of the Mount Wilson Observatory
Description:
Joins the staff of the Mount Wilson Observatory
Added to timeline:
23 Jan 2018
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big history project timeline
Henrietta Leavitt, and Edwin Hubble.
Date:
5h 45min, jan 1, 1919 y
Now
~ 105 years ago