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1 ottob 1935 anni - David Dunlap Observatory

Descrizione:

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

Aggiunto al nastro di tempo:

space satalite every mission/manned mission

17 giu 2021

1

0

238

Data:

1 ottob 1935 anni

Adesso

~ 90 years ago

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