The Soviets launched Sputnik to demonstrate their technological superiority and to assert their dominance in the space race with the United States.
The USSR launched Sputnik I, the first successful artificial satellite, on October 4, 1957.
The USSR launched Sputnik on October 4th, 1957 and Explorer 1 was launched on January 31st, 1958--so the answer is 119 days.
Sputnik 1 was launched on the 4th of October, 1957. The booster used by it had been used in August of that year to launch a long range missile.
The first artificial satellite to orbit the Earth was a Soviet satellite named Sputnik I. It was launched by the USSR on October 4, 1957, followed by Sputnik 2 in November.
The satellite the Soviets launched in 1957 was called Sputnik 1. It was the first artificial satellite to be placed into Earth's orbit and marked the beginning of the space age.
When the Soviets launched their satellite, named "Sputnik", almost immediately the United States established the National Aeronautics and Space Administration (known as NASA) in July of 1958.
Sputnik
The first satellite launched into space was Sputnik. It was launched on October 4, 1957 by the Soviets. Sputnik was launched into space and transmitted information via radio signals to Soviet scientists for three weeks.
Dwight D. Eisenhower was president during the time that the U.S. launched its Explorer 1 satellite, the following year after the Soviets launched their Sputnik-I in 1957.
The first artificial satellite was Sputnik 1, launched by the Soviet Union in 1957
The Soviets launched Sputnik to demonstrate their technological superiority and to assert their dominance in the space race with the United States.
sputnik
The first artificial satellite was "Sputnik", launched into orbit by the Soviet Union.
Sputnik I was launched by the USSR on October 4, 1957.
Sputnik 1, launched by the USSR (Russia) on October 4, 1957, was the first artificial satellite to successfully achieve Earth orbit. There had been several previous unsuccessful attempts by the USSR and the USA.
Sputnik was the first artificial satellite.