Space shuttles have captivated the nation for 30 years, but today is the last day one of these space shuttles launch out of Earth's atmosphere. The STS-135 crew lifted off in space shuttle Atlantis from the Kennedy Space Center at 11:29 EDT.
MSNBC has a great time-lapse video of Atlantis' preparation for launch as well as other great videos of the flight.
The mission summary includes the flight timeline and information on the crew members.
NASA has a flight blog.
NASA TV has several videos and a live stream of the flight.