First satellite in space
Who: The Soviets launched Sputnik and ignited the Space race. The space race was between the Soviet Union and the United States.
What: Sputnik 1 was the first ever artificial earth satellite. It was successfully launched into space by the Soviets. Sputnik 1 was only 23 inches in diameter and it was a little metal sphere.
When: Sputnik 1 was launched on October 4, 1957. Sputnik 2 was launched on Novemeber 3rd 1957.
Where: Sputnik was a soviet satellite, it was launched at Gagarin's Start in Cosmodrome Kazakhstan.
Why: It ignited the space race, and the Russians wanted to be the first to travel to space. They were also the first to put an animal in space.