Ghosts of light

GHOSTS AND FLASHES OF LIGHT - OPEN UNIVERSE This flash of light has a distinctive wavelength that can be detected by special instruments. By analysing these flashes of light inside a huge volument of water, scientists can study events at the other side of the universe. Neutrinos are ghost-like particles emitted by black holes at the centres of galaxies. NEUTRINO MAT TER TRAVELS AT THE SPEED OF LIGHT PULSE OF LIGHT RIGGING - NEUTRINO MATTER Most of them pass through the Earth without interacting LIGHT WAVELENGTH DATA with matter. Occasionally one strikes an atom and gives off a flash of light. TELESCOPE GRAPHIC: MICHAEL AGAR SOURCE: PROF ULI KATZ OF ERLANGEN-NORNBERG UNIVERSITY, FRANÇOIS MONTANET