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Mona Evans
Mona Evans • 40 weeks ago

Eskimo Nebula NGC 2392. (Credit: Andrew Fruchter (STScI) et al., WFPC2, HST, NASA) It was discovered by William Herschel in 1787. We now know that it's a planetary nebula, one that firns when a sun-like star, at the end of its life, loses its outer layers. It's about 1/3 of a light year across and located 3000 light years away in the constellation Gemini. Mona Evans, “Nebulae” www.bellaonline.c...