NASA mysterious signal: Detected by two NASA spacecraft, X-ray emissions of unknown origin could lend insight into dark matter, a mysterious substance thought to compose more than 80 percent of all matter in the known universe.
Physicists at CERN have discovered new evidence supporting the existence of the Higgs boson, which seems to behave exactly as the Standard Model predicted it would. So what's left for particle physics to uncover?
Until now, researchers have had to rely on computer simulations to explain what happens moments before the blast that rips a star apart. But NASA's orbiting X-ray observatory NuSTAR lets scientists glimpse conditions at star's core.
Physicists working with the particle detector IceCube, buried near the South Pole, have detected neutrinos of high enough energies to suggest origins in the cataclysms at the Milky Way's fringes, or perhaps even past its doorstep.