b>Microsoft and Bioware have released a new trailer from Mass Effect, showcasing Bring Down the Sky, a downloadable content pack which is now available via Xbox LIVE Marketplace, for 400 MS points. Bring Down the Sky includes a new uncharted world that introduces the notorious and feared alien race of the Batarians. A Batarian extremist group has hijacked a mobile asteroid station in the Asgard system, setting it on a collision course with the nearby colony world of Terra Nova. Only Commander Shepard can save the millions of innocent civilians before the asteroid completes its deadly descent. Bring Down the Sky contains approximately 90 minutes of heart-pounding action and a new Achievement worth 50 Gamerscore points.