The face-on Pinwheel spiral galaxy is seen at ultraviolet wavelengths in this image taken by ESA’s XMM-Newton space telescope.
Image Credit: ESA/XMM & R. Willatt
Also known as M101, the galaxy lies 21 million light-years away in the constellation Ursa Major. It measures 170 000 light-years across – nearly twice the diameter of our own Milky Way Galaxy – and contains at least a trillion stars. About a billion of these stars could be similar to our own Sun.
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