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Mona Evans
Mona Evans • 2 years ago

The Little Ghost Nebula is a planetary nebula. Nothing to do with planets, but they looked like planets in 18th century telescopes. Planetary nebulae form when a star like the Sun runs out of hydrogen and swells into a red giant, throwing off the outer layers of atmosphere. This often happens fairly symmetrically. (Image: Hubble Heritage Team) ©Mona Evans, “Nebulae” www.bellaonline.c...

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