The supernova was as bright as 570 billion of our suns and some 20 times as luminous as the entire output of the 100 billion stars of our Milky Way galaxy.
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The supernova was as bright as 570 billion of our suns and some 20 times as luminous as the entire output of the 100 billion stars of our Milky Way galaxy.
from EarthSky » Space http://ift.tt/1OB7y2Q
via IFTTT
Telescopically 