Ring Nebula (Messier 57, M57 or NGC 6720) - 3D Lenticular Postcard Greeting Card
$3.25
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Ring Nebula (Messier 57, M57 or NGC 6720) - 3D Lenticular Postcard Greeting Card 4x6 inches - In clear protective reusable sleeve Enjoy a 3D image of Ring Nebula also known as Messier 57, M57 or NGC 6720. 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. Card back contains lines for mailing address Ideal as a postcard or give as a greeting card
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