NGC 6772 vs Sh2-71
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NGC 6772
NGC 6772 is a planetary nebula in the constellation Aquila. William Herschel recorded it in July 1784, and modern catalogues identify it as a faint, compact object with a roughly oval or ring-like appearance in images. Like other planetary nebulae, it is the glowing material expelled by an evolved star and illuminated after the star has left its red-giant phase, making it an observing target for a...
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Sh2-71
Sh2-71 is a planetary nebula in the constellation Aquila, formed from gas expelled by a dying intermediate-mass star. The nebula has an irregular, asymmetric appearance rather than a simple spherical shell, and its structure includes multiple visible regions and filaments. Astronomical studies have examined whether its central star is part of a binary system, an issue that remains relevant to inte...
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