Since the time human beings saw birds soaring through sky, they wished to fly. Ancient Romans and Greeks portrayed many mythological animals and gods with wings. Around 100 BC, Hero of Alexandria, a Greek Inventor, introduced a device known as aeolipile. The device used mechanical interaction of water and heat to work. Steam generated through the two elements was its driving force. Towards the end of 17th century, scientific fundamentals were laid for the contemporary rocketry. Isaac Newton had worked on his perception of physical motion in 3 scientific laws. His laws give a peep into how the rockets functions and how are they able to work in vacuum of the outer space. His laws were soon seen to impact designing of the rockets.