An American Atlas V rocket in the 501 configuration has successfully lifted off from Space Launch Complex 41 at Cape Canaveral carrying the US Air Force's X-37B spaceplane, a smaller version of the Space Shuttle. This will be the fourth mission of the X-37B which conducts top secret missions in orbit via payloads in it's payload bay. Liftoff occurred at 11:05 Local time, 15:05 UTC time on May 20th 2015.
Videos related to STS-135, Space Shuttle Atlantis which is due to launch in July 2011, STS-135 will be the final ever Space Shuttle mission.
STS-135 will bring to the International Space Station a Multi-Purpose Logistics Module full of cargo as well as a Lightweight Multi-Purpose Carrier. The LMC will be used to take down broken parts from the ISS. Finally STS-135 will take the Robotics Refueling Mission (RRM).