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The Red Spider Nebula
The Red Spider Nebula, NGC 6537, is a striking 'butterfly' or bipolar (two-lobed) planetary nebula. Planetary nebulae are the glowing embers of ordinary stars, such as our Sun. At the end of their lives these stars expel most of their material into space, often forming a two-lobed structure as in the case of the Red Spider.
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Nebula