Mass Effect: Bring Down the Sky downloadable content is now available on Xbox Live Marketplace. The pack is 400 Microsoft points and 253 Mb of size. According to
Major Nelson's post, the description of the pack is:
"Batarian extremists have hijacked a mobile asteroid station in the Asgard system, setting it on a collision course with the nearby colony world of Terra Nova. Only you can save the human hostages on the asteroid and reroute it before it crashes into the world, killing millions of innocent civilians."
Plus it may contain more nudity ;) Check out six new images from the pack after the jump.