1960s the Apollo 8 crew (Frank Borman, Jim Lovell, William Anders) being the first manned mission to orbit another celestial body (the moon) during Christmas of 1968. On 20 July 1969, Apollo 11, the first human spaceflight landed on the Moon. Launched on 16 July 1969, it carried mission Commander Neil Armstrong, Command Module Pilot Michael Collins, and the Lunar Module Pilot Buzz Aldrin. Apollo 11 fulfilled President John F. Kennedy's goal of reaching the moon by the end of the 1960s, which he had expressed during a speech given before a joint session of Congress on 25 May 1961: "I
Effect of spaceflight on the human body Effect of spaceflight on the human body Venturing into the environment of space can have negative effects on the human body. Significant adverse effects of long-term weightlessness include muscle atrophy and deterioration of the skeleton (spaceflight osteopenia). Other significant effects include a slowing of cardiovascular system functions, decreased production of red blood cells, balance disorders, eyesight disorders and a weakening of the immune system. Additional symptoms include fluid redistribution (causing the "moon-face" appearance typical in pictures of astronauts experiencing weightlessness), loss of body mass, nasal congestion, sleep disturbance, and excess flatulence. The engineering problems associated with leaving Earth and developing