binary star

Almost everything in the universe has mass, from atoms and subatomic particles, to huge groups of galaxies.

Computer simulations reveal how a massive star draws matter from a smaller star orbiting it at close distances.

Photo taken from the world's largest optical telescope reveals the remains of a dead star in SDSS J115219.99 + 024814.4.

Due to the force of gravity in the binary star system, the star HD74423 in the Milky Way is pulled distorted to one side.

The discovery of a new strange white dwarf with an extremely low mass called KIC 8145411 suggests that they may be much more common than previously thought.