The Goldstone Deep Space Communications Complex, aka "Goldstone Observatory," is the largest tracking station in the Deep Space Network, which is comprised of three installations around the world. As part of NASA's Jet Propulsion Lab, Goldstone is used primarily to communicate with deep space probes and satellites, and to study asteroids. The network can communicate and track multiple spacecraft within the solar system 24 hours a day, 7 days a week, 365 days a year. The Goldstone complex consists of nine separate sites, spread out over 33,000 acres in a remote region of California's Mojave Desert.