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26 dic 1911 anni - Hubble started measuring the Doppler shift of spectral lines from spiral nebulae

Descrizione:

https://www.atnf.csiro.au/outreach/education/senior/cosmicengine/hubble.html

Aggiunto al nastro di tempo:

Theories Timeline Assignment

19 nov 2019

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369

Data:

26 dic 1911 anni

Adesso

~ 113 years ago

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