“The Supernova Closest to Earth–A Glowing Ring 6 Trillion Miles in Diameter”

by Craig Newmark | October 2, 2011 6:11 am

A couple of supernova facts[1] I didn’t know:

Dr. Richard Mushotzky of the NASA Goddard Space Flight Center, derived a figure of 1 billion supernovae per year, or 30 supernovae per second in the observable Universe!

Dr. Richard Mushotzky of the NASA Goddard Space Flight Center, derived a figure of 1 billion supernovae per year, or 30 supernovae per second in the observable Universe!

Endnotes:
  1. supernova facts: http://www.dailygalaxy.com/my_weblog/2011/08/-weekend-feature-the-supernova-closest-to-earth-a-glowing-ring-6-trillion-miles-in-diameter.html

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