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a-look-ahead
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A look ahead | Astronomy Magazine
Emmanuel Joly from Le Cannet-des-Maures, France Sharpless 2–216 is one of the closest planetary nebulae to Earth, just 415 light-years away in Perseus. On the sky, it has a diameter three times larger than that of the Full Moon. Of course, the term “planetary nebula” is a misnomer — such objects are actually produced by starsContinue reading “A look ahead”
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2025-02-05
2025-02-05
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Emmanuel Joly from Le Cannet-des-Maures, France
Sharpless 2–216 is one of the closest planetary nebulae to Earth, just 415 light-years away in Perseus. On the sky, it has a diameter three times larger than that of the Full Moon. Of course, the term “planetary nebula” is a misnomer — such objects are actually produced by stars like our Sun when they die, exhaling their outer layers into space. Also in the shot, at left, is the emission nebula LBN 755. This image comprises over 53 hours of exposure with a 2.8-inch scope in Hubble-palette filters, plus 30 minutes of RGB data.
