"Galaxy M81 w/supernova 1993j"
This photo of M81 includes the supernova that occurred in 1993. The supernova is a star exploding near the core of this galaxy which is about 7 million light years away. Even at this great distance this single exploding star is as bright as many other stars in this photo which are all in our own galaxy.
M81 is an extremely densely populated galaxy with over a third of its mass concentrated in its central hub. Because of the vast numbers of red and yellow giant stars, the light of M81 appears somewhat yellower than usual for large spiral galaxies.
arrow shows location of supernova 1993j
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