For four decades, the United States has been filling the outer reaches of our atmosphere with 189 reconnaissance satellites. And for several years, artist-geographer Trevor Paglen has been keeping his eye on them. The Other Night Sky," ... at the Berkeley Art Museum, is a result of Paglen's nocturnal efforts. "When you look at the number of satellites, what they're doing and what they represent, it is really a vision of trying to have the world in your clutches," says Paglen in his disheveled office in UC Berkeley's geography department. "[T]his project is trying to think about what ... looking at the night sky in search of truth means today." "The Other Night Sky" is not Paglen's first foray into extended studies of secret military projects. Six years ago - while working on a project about the California penal system that involved examining satellite photos of prisons - he stumbled on some classified military sites. At the time, the war on terror was in full bloom and a number of rumors about secret sites had begun to circulate. "We knew the CIA had to be running secret prisons around the world," Paglen says. "It was not in the news, but you could tell - people were being rounded up but were not being put in our jails. These hidden military sites I stumbled upon seemed really relevant to the idea that the state was disappearing people." Through numerous information requests at the national and state levels, he generated reams of knowledge about the United States' secret rendition program that was not then making news. That he had time to pursue it gave Paglen a sense of moral responsibility.