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1 окт 1935 г. - David Dunlap Observatory

Описание:

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

Добавлено на ленту времени:

space satalite every mission/manned mission

17 июн 2021

1

0

237

Дата:

1 окт 1935 г.

Сейчас

~ 90 г назад

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