
Sputnik is the name of the very first group of satellites sent into space by the Soviet
Union. These satellites were launched from 1957 to 1961. Sputnik means traveling
companion in Russian. Sputnik 1, the first
satellite, was launched on Oct. 4, 1957 from the Tyuratam cosmodrome. Sputnik 1 was
launched by a 92 ft. (28m) intercontinental ballistic missile. Sputnik 1 was designed by
Sergei Korolev, a Soviet engineer and scientist. The project was top secret. Sputnik 1 was
shaped like a ball and had four antennae that extended once in orbit. It was 23 inches (
58cm) in diameter and weighed 184.3 lbs. (83.6 kg). It studied the temperature in space
and sent radio signals back to Earth. Sputnik 1 circled the Earth in 1.5 hours.
Sputnik 2 was launched on Nov. 3, 1957. Also on this day the
first passenger was sent into space. The passenger was Laika, a female dog. Scientists
wanted to see how living animals would survive in space. Laika had food, water and fresh
air. She lived for one week until Sputnik 2 lost electric power.
Sputnik 1 and 2 shocked the United States. The U.S. didnt
realize that the Soviet space program was so good. The United States began to work much
harder on its own space program. President Eisenhower signed the National Aeronautics and
Space Act of 1958. This created NASA. The race to put a man on the moon had begun!
Sputnik 3 was launched on May 15, 1958. It carried the first
space laboratory. This lab had 2,129 lbs. (958 kg) of instruments. The instruments studied
what it was like outside the satellite. Sputnik 3 used solar energy to operate the lab.
There was no Sputnik 4 because the Soviets worked on the Luna
spacecraft at this time. Dogs returned to space on Sputniks 5,6,9 and 10. Sputnik 5 was
launched on August 19, 1960 and carried two dogs who came back home alive. These Sputniks
were practice for sending the first man into space.
Sputniks 7 and 8 were launched in 1961. Once in space, they were
used as launch platforms for the Venera spacecraft, which studied Venus.
Sputnik 10 was the last Sputnik satellite. It was a
successful program that captured the world's imagination.

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