Astrophysics and cosmology

How can we figure out when the universe began?

Scientists on the Dark Energy Survey, using one of the world’s most powerful digital cameras, have discovered eight more faint celestial objects hovering near our Milky Way galaxy.

Observations of this kind could lead scientists to the source of ultra-high-energy cosmic rays.

Our universe could be just one small piece of a bubbling multiverse.

Dark energy is everywhere. It will determine the fate of our universe. And we still have no idea what it is.

The Fermi Gamma-ray Space Telescope creates maps of the gamma-ray sky.

A batch of newly discovered satellite dwarf galaxies orbiting the Milky Way should help scientists better grasp the evolution of the universe while also honing in on dark matter's identity.

The fellowship will support their research on new capabilities for the lab's X-ray free-electron lasers and new telescope technology to look for signs of cosmic inflation.

SLAC scientists and engineers celebrated the completion of a new clean room, where the lab will assemble the camera of the future Large Synoptic Survey Telescope.

The Large Synoptic Survey Telescope will take the most thorough survey ever of the Southern sky.

Dark Energy Survey scientists have released a detailed map of dark matter – crucial information for a better understanding of galaxy formation and dark energy.