Dark Energy

The missions, called Solar Orbiter and Euclid, will launch in 2017 and 2019, respectively.

The most accurate measurements yet of the expansion of the universe suggest dark energy may be here to stay.

An advanced camera on a South American telescope will search for clues to why the universe's expansion is speeding up.

Peering through a giant cluster of galaxies as if it were a cosmic magnifying glass, astronomers have created a new, incredibly detailed map of the dark matter found there.

By peering at the distant parts of universe through a galactic magnifying lens, astronomers may have found a way to better understand mysterious dark energy.

A much-anticipated report lays out the big telescopes that will push scientific discovery during the next decade or two.