An excess of gamma rays at the center of the Milky Way, previously discussed as a sign of dark matter, is likely caused by the superdense remains of ancient stars.
SLAC cosmologists are using multiple images of the same quasars, produced by massive galaxies’ gravitational pull, to calibrate cosmic distances. Their work may help resolve long-standing debates about how quickly the universe is expanding.
Honored for early theoretical predictions that helped elucidate the nature of the strong force and the structure of the proton, he is still shaking things up today.
Four complementary analyses by Fermilab’s MicroBooNE show no signs of a theorized fourth kind of neutrino known as the sterile neutrino. Its existence is considered a possible explanation for anomalies seen in previous physics experiments.
Nearly 200 guests attended a symposium on fundamental physics to celebrate the former deputy director’s numerous scientific contributions, which continue to have a tremendous impact on our understanding of the subatomic world.
Biochemical 'action shots' with SLAC’s X-ray laser could help scientists develop synthetic enzymes for medicine and answer fundamental questions about how enzymes change during chemical reactions.
Using SLAC's X-ray laser, researchers have for the first time directly observed myoglobin move within quadrillionths of a second after a bond breaks and the protein releases a gas molecule.
