SOLAR SYSTEM

Detailed explanation-1: -The first rocket which actually launched something into space was used to launch Sputnik, the first satellite, on October 4, 1957. The rocket that launched Sputnik was a R-7 ICBM rocket.

Detailed explanation-2: -It is exactly 75 years since Dr Robert H. Goddard successfully launched the first liquid-fueled rocket on 16 March 1926.

Detailed explanation-3: -American college professor and scientist Robert Goddard built and flew the world’s first liquid propellant rocket on March 16, 1926. Its flight, though unimpressive (it climbed only 12.5 meters), was the forerunner of the Saturn V Moon rocket 43 years later.

Detailed explanation-4: -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-5: -For the main frame most rockets use aerospace grade aluminum or titanium since both metals are very strong but light weight. Future rocket designs are even looking into using carbon composite structures. Aluminum, however, melts at the high reentry temperatures.

Detailed explanation-6: -On Oct. 4, 1957, the Soviets launched the first artificial satellite, Sputnik 1, into space. Four years later on April 12, 1961, Russian Lt. Yuri Gagarin became the first human to orbit Earth in Vostok 1.