Taking a census of all the luminous objects in one-quarter of the visible cosmos is a hefty accounting job: it takes a specially-built telescope on task every clear night for eight years, wielding one of the biggest digital cameras on the planet. Over a hundred million stars and galaxies have been tallied so far. Meet the scientists who are set on divining the origins of the Universe from this unprecedented store of data. SCIENCE BULLETINS are a production of the American Museum of Natural History... http://sciencebulletins.amnh.org.