What is the name of this galaxy?

Milky Way
Andromeda Galaxy
Pinwheel Galaxy
Sculptor Galaxy
The Pinwheel Galaxy ( M101) is a face-on spiral galaxy distanced 21 million light-years away from Earth in the constellation Ursa Major. M101 is a large galaxy, with a diameter of 170,000 light-years. By comparison, the Milky Way has a diameter of 258,000 light years. It has around a trillion stars, twice the number in the Milky Way. It has a disk mass on the order of 100 billion solar masses, along with a small central bulge of about 3 billion solar masses.
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Andromeda Galaxy
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Sculptor Galaxy
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