Sputnik came as a surprise, the US did not know about it in advance.
The USSR (Union of Soviet Socialist Republics) -- Russia launched Sputnik
Yes, Sputnik 1 launched late 1950s
we didn't the USSR did
The USSR launched Sputnik on October 4th, 1957 and Explorer 1 was launched on January 31st, 1958--so the answer is 119 days.
Sputnik I, launched on October 4, 1957, was the first man-made object to successfully achieve Earth orbit.It was followed by Sputnik II on Sputnik 2, on November 3, 1957.The first US satelllite was Explorer I, launched on January 31, 1958.
The first artificial satellite, Sputnik I, was launched by the USSR (Russia) in 1957. Following its launch on October 4, Russia launched Sputnik 2 on November 3. Sputnik 3 was not launched until May, 1958 following the US Explorer and Vanguard satellites in January and March.
Sputnik 2.
The first man-made object to successfully be placed in Earth orbit was dubbed "Sputnik". It was launched from the Baikonur Cosmodrome in Kazakhstan ... part of the USSR at the time ... on October 4, 1957.
No. Sputnik was launched in 1957
No. The first satellite to be launched into space was Sputnik, launched by the Soviet Union in 1957.
Launched the first satellite- Sputnik.
The Explorer but it wasnt a rocket, it was a satellite