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M57 | by liverpooltelescope
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M57

The Ring Nebula is a planetary nebula in the northern constellation of Lyra. Such objects are formed when a shell of ionized gas is expelled into the surrounding interstellar medium by a red giant star, which was passing through the last stage in its evolution before becoming a white dwarf. M57 approximately 2,300 light-years away from Earth.

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Uploaded on November 19, 2014