M99

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M99

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Messier 99 is a so-called grand design spiral, with long, large and clearly defined spiral arms -- giving it a structure somewhat similar to the Milky Way.
Lying around 50 million light-years away, Messier 99 is one of over a thousand galaxies that make up the Virgo Cluster, the closest cluster of galaxies to us.
In recent years, a number of unexplained phenomena in Messier 99 have been studied by astronomers.