Figure 1
Todd Mason, Mason Productions Inc./LSST Corp.

Big picture. When the 8.4-meter-diameter Large Synoptic Survey Telescope begins operating in Chile in 2014, it will map the galaxies and galaxy clusters that inhabit distant parts of the universe. These include the regions from which the relic neutrinos originated less than a second after the big bang, according to a new calculation. The cosmic microwave background comes from much farther away.