Monkeys and apes in space

Before humans went into space, several animals were launched into space, including numerous non-human primates, so that scientists could investigate the biological effects of space travel. The United States launched flights containing primate cargo primarily between 1948-1961 with one flight in 1969 and one in 1985. France launched two monkey-carrying flights in 1967. The Soviet Union and Russia launched monkeys between 1983 and 1996. Most primates were anesthetized before lift-off. Overall thirty-two monkeys flew in the space program; none flew more than once. Numerous back-up monkeys also went through the programs but never flew. Monkeys and apes from several species were used, including rhesus monkeys, cynomolgus monkeys, squirrel monkeys, pig-tailed macaques, and chimpanzees.