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1 oct. 1935 - David Dunlap Observatory
Description:
this was the first canada telescope and what it discovered was the first evidence of black holes.
Ajouté au bande de temps:
space satalite every mission/manned mission
By
Brady Evans
17 juin 2021
1
0
237
Date:
1 oct. 1935
Maintenaint
~ Il y a 90 ans
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