NGC 2359 nebular, optical image

NGC 2359 nebular, optical image

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Credit: Adam Block/Mount Lemmon SkyCenter/University of Arizona/SCIENCE PHOTO LIBRARY

Caption: NGC 2359 nebula. Optical image of the Wolf-Rayet emission nebula NGC 2359, also known as Thor's Helmet. This nebula lies around 40,000 light years from Earth in the constellation Canis Major. A Wolf-Rayet nebula is formed by the ejection of glowing, ionised gas from a hot, central star. These Wolf-Rayet stars lose mass 100 times faster than stars of comparable luminosity and may be a million times more luminous than the Sun. The interaction of the ejected gas with interstellar matter forms a bubble around the star, which glows when ionised by the star's radiation.

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Keywords: astronomical, astronomy, astrophysical, astrophysics, gas, gasses, ionisation, ionised, nebula, ngc 2359, no-one, nobody, optical image, radiation, space observation, star, starry, stars, thor'ss helmet, thors helmet, wolf rayet, wolf-rayet

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