List of human spaceflights List of Space Shuttle missions Outline of space science Space Shuttle program References External links Official NASA Internet Site Official NASA Space Shuttle Internet Site STS-121 mission overview Additional NASA STS-121 mission info NASA mission summary Dec 2003 Spacefacts page of STS-121 STS-121 mission info – this site contains info about the STS-121 mission, crew, objectives, as well as images, a podcast, and quite a bit of video related to the mission. Return to Flight: NASA's road to STS-121 The Inoculated Mind – Interview with the scientists who sent experiments into orbit on board STS-121 STS-121 The Full Story STS-121 Video Highlights Space Shuttle missions Spacecraft launched in 2006 Spacecraft which reentered in 2006 Articles containing video clips