Enos (chimpanzee)
Enos (born about 1957 – died November 4, 1962) was the second chimpanzee launched into space by NASA. He was the first and only chimpanzee, and third hominid after cosmonauts Yuri Gagarin and Gherman Titov, to orbit the Earth. Enos's flight occurred on November 29, 1961. Enos was brought from the Miami Rare Bird Farm on April 3, 1960. He completed more than 1,250 training hours at the University of Kentucky and Holloman Air Force Base. Training was more intense for him than for his predecessor Ham, who had become the first great ape in space in January 1961, because Enos was exposed to weightlessness and higher gs for longer periods of time. His training included psychomotor instruction and aircraft flights. Enos was selected for his Project Mercury flight only three days before launch. Two months prior, NASA launched Mercury-Atlas 4 on September 13, 1961, to conduct an identical mission with a "crewman simulator" on board. Enos flew into space aboard Mercury-Atlas 5 on November 29, 1961. He completed his first orbit in 1 hour and 28.5 minutes. Enos was scheduled to complete three orbits, but the mission was aborted after two, due to two issues: capsule overheating and a