Map of universe offers clues to dark energy

The biggest-ever 3D map of the universe has been released, including more than 500,000 galaxies and 100,000 stars.

Milky Way still rings like a bell after cosmic crash

Our galaxy is still reverberating from a strike by a small galaxy or massive dark matter structure.

Survey reveals how dark energy shaped universe

After two years' work, the Sloan Digital Sky Survey (SDSS-III) has  measureed the precise distances of over a quarter of a million galaxies.