HUBBLE ATLAS
Pinwheel Galaxy close-up 3 (Messier 101 , Pinwheel Galaxy) — image from the Hubble Space Telescope

Galaxies

Pinwheel Galaxy close-up 3

February 28, 2006 · ESA/Hubble · Messier 101 , Pinwheel Galaxy · Ursa Major

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A selection of some of the millions of individual stars visible in Messier 101 with Hubble's sharp vision. In total it is estimated that the Pinwheel galaxy contains about one trillion stars.