Space Shuttle Discovery Continues On Its Last Mission

IN SPACE - MARCH 7: In this handout image provided by NASA, the space shuttle Discovery is seen from the International Space Station as the two orbital spacecraft accomplish their relative separation after an aggregate of 12 astronauts and cosmonauts worked together for over a week during flight day 12 activities March 7, 2011 in Space. Discovery, on its 39th and final flight, is carrying the Italian-built Permanent Multipurpose Module (PMM), Express Logistics Carrier 4 (ELC4) and Robonaut 2, the first humanoid robot in space to the International Space Station. Discovery was in service for 27 years and will be decommissioned and sent to a museum. Two remaining shuttle missions are planned before the program ends. (Photo by NASA via Getty Images)