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.

It turns out that one of the most prominent space artists predicted how a strange celestial object would look — 50 years in ...

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 ...

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 ...

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 ...

One of the most photographed objects in the night sky is the Ring Nebula, wreckage of a bygone sun-like star about 2,000 light-years from Earth. Its striking, smoke-ring-like appearance has both ...