"Unmanned space plane returns
LOS ANGELES - An unmanned Air Force space plane steered itself to a
landing early Saturday at a California military base, capping a 15-month
clandestine mission. The spacecraft, which was launched from Cape
Canaveral Air Force Station in Florida in March 2011, conducted in-orbit
experiments during the mission, officials said. It was the second such
autonomous landing at the Vandenberg Air Force Base. In 2010, an
identical unmanned spacecraft returned to Earth after seven months and
91 million miles in orbit."
