It was basically a metal shell around some electronics and a couple of batteries.
1955-1957
The USSR built the Sputnik.
The USSR built the Sputnik.
Sputnik 1 was built using a polished metal sphere with four long antennas and transmitted radio pulses. It also contained radio equipment, batteries, and a cooling system. The construction of Sputnik 1 took less than a month in order to meet the deadline set by the Soviet Union for the launch.
Sputnik was a series of satellites built and launched by the then Soviet union. Sputnik 1 and 2 became the first two man made objects to attain orbit around the Earth.
Russia, I believe
1957
the 2 in Sputnik 2 means it is the second to be built.
It means it was the first sputnik.
Sputnik 1 was a Russian satellite.
Sputnik 1 Sputnik 1
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.