Live7n Celebrate the 5oth anniversary of Sputnik I

The best space has been subjected to direct exploration by human beings using automated space probes as well as manned spacecraft. The space age began on October 4, 1957 when the Soviet Union launched Sputnik I (called the ‘Fellow Traveller’) the first artificial satellite to orbit the earth. Than came sputnik II with a dog, Laika, on board. The behaviour of the animal in the space showed the possibilities of survival in space. The first US satellite was explorer I, launched in 1958. It discovered Van Allen radiation in space. In 1959 came vanguard II of the USA, the first satellite to send weather information back to earth. The USSR sent up Luna II, the first probe to strike the moon. In 1960, TRANSIT 1B of the US Navy became the first navigation satellite, and in 1961, TRANSIT 4A was the first satellite to use nuclear power.

 

In 1962, Ranger 4 became the first US satellite to strike the moon. Telstar 1 became the first satellite to relay television programmes between USA and Europe. OSO 1 became the first orbiting solar observatory. Arial, the first international Source >spectrm GS Book