Within this nebula, the hot core of the star remains ... Eventually—over tens or even hundreds of billions of years—a white dwarf cools until it becomes a black dwarf, which emits no energy.

We are staring "right down the barrel of it, which is really quite surprising to me — we're just lucky." One of the most photographed objects in the night sky is the Ring Nebula, wreckage of a ...

Once the star becomes a white dwarf, an ocean world at Saturn's orbit ... This is possible both through interaction with the nebula formed during the red giant stage, as well as through ...

These wings, which spread outward from a mall collapsed white dwarf, are all that remains of the old star. The gas of the wings that we see in the Butterfly Nebula images is the result of the ...

dynamic nebula. The primary star is an aging red giant, and its companion is a compact, burned-out star known as a white dwarf. When the white dwarf swings closest to the red giant along its 44 ...

In addition to helping the researchers nail down the nebula's ellipsoidal structure, the 3D model also confirmed that the stellar corpse of the bygone star known as a white dwarf, which is seen as the ...