GENERAL KNOWLEDGE

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: -The launch of Sputnik 1 shocked many Americans, who had assumed that their country was technologically ahead of the Soviet Union, and led to the “space race” between the two countries. Sputnik 2, launched on November 3, 1957, carried the dog Laika, the first living creature to be shot into space and orbit Earth.

Detailed explanation-3: -Sputnik 1 was launched in 1957, and just three months later, it spontaneously de-orbited and fell back to Earth. The particles from our atmosphere rise far above any artificial line we’ve drawn, affecting all of our Earth-orbiting satellites.