http://twitter.com/iPhoneMaster13/status/1212196308204867586RT @AstronomyMag: To map the universe, astronomers string together distance measurements to ever-farther objects, like climbing rungs on a cosmic ladder. https://t.co/sKrEpKBFCE

To map the universe, astronomers string together distance measurements to ever-farther objects, like climbing rungs on a cosmic ladder. https://t.co/sKrEpKBFCE

— Astronomy Magazine (@AstronomyMag) December 27, 2019

from Twitter https://twitter.com/iPhoneMaster13

December 31, 2019 at 09:18PM
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