An Historical Retrospective of the Future: The Supernova and Cepheids of Spiral Galaxy UGC 9391 via NASA https://t.co/OufFZl385x https://t.co/sYhvltWEKr

The Supernova and Cepheids of Spiral Galaxy UGC 9391 via NASA https://t.co/OufFZl385x https://t.co/sYhvltWEKr

The Supernova and Cepheids of Spiral Galaxy UGC 9391 via NASA https://t.co/OufFZl385x http://pic.twitter.com/sYhvltWEKr
— Dean Norris (@geekynerdyone) June 7, 2016

from Twitter https://twitter.com/geekynerdyone

June 07, 2016 at 12:27AM
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