crab nebula
Physicists discover Crab nebula is slowly dimming
BATON ROUGE — The Crab Nebula, once considered to be a source of energy so stable that astronomers used it to calibrate their instruments, is dimming. LSU physicists Mike Cherry, Gary Case and graduate student James Rodi, together with an intern…
Fermi’s Large Area Telescope sees surprising flares in crab nebula
Menlo Park, Calif. — The Crab Nebula, one of our best-known and most stable neighbors in the winter sky, is shocking scientists with a propensity for fireworks — gamma-ray flares set off by the most energetic particles ever traced to a speci…