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A hot, powerful 0-type star 45 times more massive and several 100,000 times more luminous than the Sun is located near the center of this impressive bubble known as "Bubble Nebula".
The stellar powerhouse is so hot that it is quickly shedding material into space.
Despite its apparently spherical shape, it seems not to have the characteristics of either a planetary nebula or a supernova remnant. This remarkable giant "Bubble" is expanding. The Bubble Nebula (also known as NGC 7635), is a mere 10 light-years wide… Rest of article with all images here: