50th anniversary of NASA's Gemini 8 mission

NASA astronaut Neil Armstrong undergoes weight and balance tests in the Pyrotechnic Installation Building, at Kennedy Space Center, Florida, on February 18, 1966. March 16, 2016 marks the 50th anniversary of NASA's Gemini 8 mission, the sixth manned spaceflight conducted during the United States' Project Gemini program. The primary objective of the mission, the successful docking of two spacecraft in orbit, a first in spaceflight, was a success though the crew would experience a critical in-space system failure, forcing them to abandon the mission prematurely. UPI