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1 янв 1902 г. - Hired at Harvard Observatory

Описание:

Leavitt is hired at Havard's observatory and works there for the next 19 years.

Добавлено на ленту времени:

Henrietta Leavitt

ByShawn Cunning

2 окт 2018

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491

Дата:

1 янв 1902 г.

Сейчас

~ 123 г назад

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