The so-called Fireworks Galaxy, a face-on spiral galaxy about 22 million light years away from Earth, has had eight known supernovas in the past 100 years. Such celestial explosions gave rise to its nickname. Our Chandra X-Ray Observatory has revealed three of the oldest supernovas ever detected in X-rays, giving even more credence to its nickname. Details: http://go.nasa.gov/2tNR2NS#July4th
#Fireworks #IndependenceDay #IndependenceDay2017 #July4 #4thofJuly
#FourthOfJuly #NASA #Stars #Estrellas #Sterne #Galaxy #Galaxies
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