Each player gathers "mass" to form three different stars. Players then collect "time" for each star to evolve through all stages. The first player to complete the life cycles of all three stars - ending in a white dwarf, a neutron star, and a black hole - wins. The game was developed in cooperation with NASA's Chandra X-ray Centre, the Harvard-Smithsonian Centre for Astrophysics, and the Wright Centre for Innovation Science Education at Tufts University. It includes a 19 1/2. square game board; game pieces; 60 cards presenting 300 questions at four levels of difficulty; and a booklet with instructions, optional activities, record charts, correlations to the National Science Education standards, and a glossary.