Dwarf galaxies are the most abundant type of galaxy that populate the universe. Composed of 100 times fewer stars than the Milky Way, or even less, they are the building blocks of more massive ...

An artistic rendering of the moment when the first white dwarf explodes and spews material at the second white dwarf, which itself is about to explode. Credit University of Warwick/Mark Garlick ...

A new view of the Helix Nebula reveals a dying white dwarf star at the nebula's center. This star's violent eating habits could be responsible for strange X-ray emissions in the region.