When stars like our sun die, their gaseous layers are ejected out and heated by the star's core remains. The core eventually becomes a white dwarf that lights up the gas layers to create a nebula.

Infrared light from the outer gaseous layers of the nebula are represented by blue and green. Red represents the final layers of gas that were puffed out. The white dwarf is a tiny dot in the middle.

The bright red circle is dust circling the white dwarf. The dust, likely made from the star's outer orbiting planets, may have been kicked up by comets that survived the star's death. Something similar may happen when our own sun dies, billions of years from now.

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