Named Kohoutek 4-55, the nebula was captured by the Hubble Space Telescope. What is it? Planetary nebulae like Kohoutek 4-55 ...

This colorful image of the Helix nebula may mirror what someday could become of our sun and our home planet. Released on ...

The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects.

Astronomers have spotted two huge white dwarf stars which they say are destined ... This means that although the stars are relatively close in space terms, they're still very very far away!