cosmology

Scientists report the possible discovery of primordial gravitational waves, ripples in space-time that carry a record of how the universe began.

A new analysis strengthens the case that gamma rays emanating from the center of the Milky Way come from dark matter particles known as WIMPs.

With a new approach that treats the universe as a fluid, cosmologists plan to tease out the fine details of the Big Bang from its behavior and evolution.

As physics prepares for ambitious projects like the Large Synoptic Survey Telescope, the field is seeking new methods of data-driven discovery.

Whispers of the elusive particles are becoming stronger with a series of signals that appear to be zeroing in on a leading contender.

Theoretical cosmologists are piecing together a cosmic origin story from a surprising anomaly in the recently released Planck satellite image.

Decades of confounding experiments have physicists considering a startling possibility: The universe might not make sense.

Three “extremely large telescopes” poised to begin observations within a decade could help answer some of the universe’s oldest and best-kept secrets.