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 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / University of Arizona / Mount Lemmon SkyCenter / Adam Block |
Taille de l’image : | 4593 px × 4606 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |