Animals in space originally served to test the survivability of spaceflight before manned space missions were attempted. Later animals were flown to investigate various biological processes and the effects microgravity and space flight might have on them. As of 2004, five national space programs have flown animals into space: the United States, Soviet Union, France, China and Japan.
On January 29, 1951, the Soviet Union launched the R-1 IIIA-1 flight, carrying the dogs Tsygan (, "Gypsy") and Dezik () into space (but not into orbit). The U.S. launched mice aboard spacecraft later that year; however, they failed to reach the altitude for true spaceflight.
The first animal in orbit was the Soviet dog Laika onboard Sputnik 2 on November 3, 1957. Laika died during the flight. At least 10 other dogs were launched into orbit and numerous others on sub-orbital flights (See Russian space dogs) before the historic date of April 12, 1961, when Yuri Gagarin became the first man in space.
On December 13, 1958, a Jupiter IRBM, AM-13, was launched from Cape Canaveral, Florida with a U.S. Navy trained South American squirrel monkey named "Gordo" onboard. The nosecone recovery parachute failed to operate and "Gordo" did not survive the flight. Telemetry data sent back during the flight showed that the monkey survived the 10g of launch, 8 minutes of weightlessness and 40g of reentry at 10,000 miles per hour. The nosecone sank 1,302 nm downrange from Cape Canaveral and was not recovered.
Monkeys Able and Baker became the first monkeys to survive spaceflight after their 1959 flight. On May 28, 1959, aboard Jupiter IRBM AM-18, were a 7 pound (3.18 kg) American-born rhesus monkey, "Able" and an 11 ounce (310 g) black-capped squirrel monkey from Peru, "Baker". The monkeys rode in the nosecone of the missile to an altitude of 360 miles (579 km) and a distance of 1,700 miles (2,735 km) down the Atlantic Missile Range from Cape Canaveral, Florida. They withstood forces 38 times the normal pull of gravity and were weightless for about 9 minutes. A top speed of 10,000 mph (16,093 km/h) was reached during their 16 minute flight. The monkeys survived the flight in good condition. "Able" died four days after the flight while undergoing surgery to remove an infected medical electrode, from a reaction to the anesthesia. "Baker" lived until November 29, 1984 at the US Space and Rocket Center in Huntsville, Alabama.
The Soviet Union in the Vostok 3A flights of March 1961 launched mice and, for the first time, guinea pigs and frogs (northern leopard frogs).
France flew the first rat into space on February 22, 1961. Two further rats were flown in October, 1962.
France launched Felix the cat into space on October 18, 1963. The cat had electrodes implanted into its head to measure neural impluses. Felix was recovered alive but the next cat in space was not. The final French animal launches were of two monkeys in March, 1967.
China launched mice and rats in 1964 and 1965 and two dogs in 1966.
Two Russian space dogs, Veterok (Ветерок, "Little Wind") and Ugolyok (Уголёк, "Ember"), were launched on February 22, 1966 on board Voskhod 3 and spent 22 days in orbit before landing on March 16. This spaceflight of record-breaking duration was not surpassed by humans until Skylab 2 in 1974 and still stands as the longest space flight by dogs.
The United States launched Biosatellite I in 1966 and Biosatellite I/II in 1967 with fruit flies, parasitic wasps, flour beetles and frog eggs along with bacteria, amoebae, plants and fungi.
The first tortoise in space and the first animal of any kind in deep space was launched September 14, 1968 by the Soviet Union. The Horsfield's tortoise was sent on a circumlunar voyage along with wine flies, meal worms and other biological specimens. The capsule was recovered at sea September 21.
The United States launched the monkey Bonny in 1969 on the first multi-day primate mission, one of four U.S. monkey missions in the 1960s.
The Soviet Union continued launching dogs in this decade. In total in the 1950s and 60s, the Soviet Union launched missions with passenger slots for at least 57 dogs. The actual number of dogs in space is smaller as some dogs flew more than once. (See Russian space dogs)
Apollo 16 on April 16, 1972 carried nematodes and Apollo 17, launched on December 7, 1972 carried five pocket mice, although one died on the circumlunar trip. Skylab 3 carried pocket mice and the first fish in space (mummichog), and the first spiders in space, cross spiders. The U.S. also flew mummichog on the Apollo-Soyuz mission.
The Soviets flew a number of Bion program missions which consisted of satellites with biological cargoes. On these launches they flew tortoises, rats, and mummichog. On Soyuz 20, launched November 17, 1975, tortoises set the duration record for an animal in space when they spent 90.5 days in space. Salyut 5 on June 22, 1976 carried tortoises and a fish, and zebra danio.
After an experiment was lost in the Challenger disaster, chicken embryos (fertilized eggs) were sent into space in an experiment on STS-29 in 1989. The experiment was designed for a student contest.
Toyohiro Akiyama, a Japanese journalist carried Japanese tree frogs with him during his trip to the Mir space station in December, 1990. Other biological experiments aboard Mir involved quail eggs.
Japan launched its first animals into space on March 18, 1995: a species of newt.
The U.S. during the 1990s carried crickets, mice, rats, frogs, newts, fruit flies, snails, carp, medaka, oyster toadfish, sea urchins, swordtail fish, gypsy moth eggs, stick insect eggs and quail eggs aboard the Space Shuttle.
C. elegans are also part of experiments aboard the International Space Station as well as research using quail eggs.
Earlier shuttle missions included grade school, junior high and high school projects; some of these included ants, stick insect eggs and brine shrimp cysts. Other science missions in the 2000s included gypsy moth eggs.
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