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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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A Hot Pink Shell Of My Former SelfCredit: Canada-France-Hawaii Telescope/CoelumTuesday, September 4, 2012: Sh2-188, a planetary nebula, consists of a one-sided shell of material colliding with the interstellar medium, triggering shock wave structures. The planetary nebula phase is a short period during the evolution of a sun-like star in which for some tens of thousands of years the star ejects its outer layers into outer space. (Planetary nebulas have nothing to do with planets, but were misnam