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1 Okt 1935 Jahr - David Dunlap Observatory

Beschreibung:

this was the first canada telescope and what it discovered was the first evidence of black holes.

Zugefügt zum Band der Zeit:

space satalite every mission/manned mission

17 Jun 2021

1

0

238

Datum:

1 Okt 1935 Jahr

Jetzt

~ 90 years ago

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