SOLAR SYSTEM

Detailed explanation-1: -On October 4, 1957, the Soviet Union launched the earth’s first artificial satellite, Sputnik I . The successful launch came as a shock to experts and citizens in the United States, who had hoped that the United States would accomplish this scientific advancement first.

Detailed explanation-2: -Sputnik, any of a series of three artificial Earth satellites, the first of whose launch by the Soviet Union on October 4, 1957, inaugurated the space age. Sputnik 1, the first artificial satellite launched, was a 83.6-kg (184-pound) capsule.

Detailed explanation-3: -Sputnik 1 (/ˈspʌtnɪk, ˈspʊtnɪk/; see § Etymology) was the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. It sent a radio signal back to Earth for three weeks before its three silver-zinc batteries ran out.

Detailed explanation-4: -The Sputnik 1 spacecraft was the first artificial satellite successfully placed in orbit around the Earth and was launched from Baikonur Cosmodrome at Tyuratam (370 km southwest of the small town of Baikonur) in Kazakhstan, then part of the former Soviet Union.

Detailed explanation-5: -Yuri Gagarin from the Soviet Union was the first human in space. His vehicle, Vostok 1 circled Earth at a speed of 27, 400 kilometers per hour with the flight lasting 108 minutes. Vostok’s reentry was controlled by a computer.

Detailed explanation-6: -On October 4, 1957, the Soviet Union launched the earth’s first artificial satellite, Sputnik-1.

Detailed explanation-7: -12 April 1961: The Soviet Union achieve a clear triumph in the Space Race. Aboard the Vostok 1, Yuri Gagarin makes a single orbit around the Earth and becomes the first man to reach space. He remained in space for one hour and forty-eight minutes before landing in Saratov Oblast, west Russia.