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A Puffy, Dying star

AKA planetary nebula NGC 1514.

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"The object is actually a pair of stars -- one star is a dying giant somewhat heavier and hotter than our sun, and the other was an even larger star that has now contracted into a dense body called a white dwarf. As the giant star ages, it sheds some its outer layers of material to form a large bubble around the two stars. Jets of material from the white dwarf are thought to have smashed into this bubble wall. The areas where the jets hit the cavity walls appear as orange rings in the WISE image. This is because dust in the rings is being heated and glows with infrared light that [NASA's Wide-field Infrared Survey Explorer] detects."

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