A supernova is the death blast of a giant star, far larger than our Sun.  Massive stars go out with a bang, outshining entire galaxies, allowing us to see them across the universe.  A supernova observed in 2013 occurred in a distant galaxy and took over 30 Million years to reach Earth, where the timing was perfect for us to observe and study it.  And now that it’s been studied, the explosion was truly the death of a giant. The supernova, named 2013 ej, was discovered in June 2013 in the galaxy M74 in the constellation Pisces.  It was the closest supernova...