Rendering of the LSST camera. SLAC is leading the construction of the 3.2-gigapixel camera, which will be the size of a small car and weigh more than 3 tons. The digital camera will be the largest ever built, allowing LSST to create an unprecedented archive of astronomical data that will help researchers study the formation of galaxies, track potentially hazardous asteroids, observe exploding stars and better understand mysterious dark matter and dark energy, which make up 95 percent of the universe. (SLAC National Accelerator Laboratory)