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January 31, 2020
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dec 26, 1911 - Hubble started measuring the Doppler shift of spectral lines from spiral nebulae

Description:

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

Added to timeline:

2 months ago
0
0
20
Theories Timeline Assignment
Yr10 Science

Date:

dec 26, 1911
Now
~ 108 years ago
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