Combining the newest of astronomical instruments with the most venerable techniques of patient attention to detail, scientists at the Department of Energy’s Fermi National Accelerator Laboratory, the University of Chicago and other institutions believe they have made the first optical observation of a gamma ray burst afterglow unprompted by prior observation of the gamma ray burst itself-a so-called “orphan afterglow.”

Scientists at the Department of Energy’s Fermi National Accelerator Laboratory have found a surprising discrepancy between predictions for the behavior of neutrinos and the way the subatomic particles actually behave.