Here is a new trailer for Gravity, the Alfonso Cuaron-directed space thriller that stars Sandra Bullock and George Clooney. The film, a passion project for Cuaron, just received a berth in the Toronto Film Festival. It focuses on the attempt by two astronauts to return home after a catastrophic accident. This trailer focuses on that accident. Cuaron shot this film in 3D, and given his pedigree and the new technology, this could stack up memorably among the space film genre.