Space shuttle Atlantis is carrying hundreds of items commemorating the final shuttle mission, along with taking the first iPhone into orbit.
NASA to test water purification method for long-duration space exploration.
Flag will pay tribute to astronauts who have died in the line of duty as it flies aboard space shuttle Atlantis.
Find educational resources and information on NASA's STS-135 mission and crew.
It began as a dream and has captivated students for 30 years.
The STS-135 crew members prepare for their mission to the International Space Station aboard space shuttle Atlantis.