http://twitter.com/iPhoneMaster13/status/1197677695389319168RT @AstronomyMag: The debate is on! How fast is the universe expanding? Astronomers turn to red giant stars for insight. https://t.co/g5gxjLcCXp

The debate is on! How fast is the universe expanding? Astronomers turn to red giant stars for insight. https://t.co/g5gxjLcCXp

— Astronomy Magazine (@AstronomyMag) November 21, 2019

from Twitter https://twitter.com/iPhoneMaster13

November 21, 2019 at 07:46PM
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