Introduction

Space has been a matter of interest and curiosity since centuries. The ever-stretching dark void with endless streams of stars and stellar formations have caught eyes and had people wondering beyond Earth’s Horizons. With the invention of early telescopes , stargazing became a interest of many people. People developed intentions to find out more about the great void and what lies beyond what we can see.

 We have really been into space missions since the last 65 years , beginning with Sputnik 1, a very small satellite , sent to space by U.S.S.R in 1957 , followed by formation of NASA in U.S the next year. Post World War II , there had been a cold war Space race between U.S and U.S.S.R which ended with NASA (U.S) sending men to moon in its Apollo series of crewed missions , the first being Apollo 11 in 1969 , the last being Apollo 17 in 1972. The 20th century saw a huge indulgence into Space , it ended with the birth of International Space Station as a collaboration of many Space Agencies. 

There had been much more innovation in Space Exploration Technologies in the past 2 decades , with private corporations like SpaceX and BlueOrigin also getting their way into space exploration.