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21 sept. 1893 - Wilhem Baade
Description:
Calculated an accurate estimate of the size of the universe and discovered supernovas
Ajouté au bande de temps:
Astronomers Timeline
By
Elijah Hatcher
7 nov. 2018
0
0
316
Date:
21 sept. 1893
Maintenaint
~ Il y a 132 ans
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