1957
Sputnik 1 was launched on the 4th of October 1957.
1957
Sputnik was put into orbit on October 4, 1957.
1957, the International Geophysical Year.
1957
the year 1815
The Russians launched Sputnik 1 on the 4th October 1957, 7:28 PM.
No, Sputnik I reentered the atmosphere and burned up in January 1958. No, Sputnik 2 reentered the atmosphere and burned up in April 1958. Yes, Sputnik 3 reentered the atmosphere and burned up in April 1960. Yes, Sputnik 4 was not launched until May 1960. Yes, Sputnik 5 was not launched until August 1960
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 Russian rocket was called Sputnik. Sputnik was sent in to space in the year 1957 and returned within 92 days.
sputnik in 1957
Because the Sputnik program ended with Sputnik 3. Albeit there was a Sputnik 40 and 41 but these were to commemorate the 40th anniversary of Sputnik 1.