A stunning image of Thor's Helmet (NGC 2359), a nebula about 15,000 light-years away in the constellation Canis Major. This interstellar bubble, 30 light-years across, is sculpted by the powerful winds of a massive, hot Wolf-Rayet star nearing its supernova phase. The image showcases the nebula's intricate filamentary structures in shades of blue-green and red, highlighting the oxygen emission in the glowing gas.

Astronomy Picture from 07/03/2013

Thor's Helmet

Source: https://apod.nasa.gov/apod/ap130307.html


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