After many years from now i.e. in 26th century earth had lost many types of fuels including rocket fuel. The thing to worry about at that time was not the hindering of space exploration but meeting people. There had already been lots of human settlements in space done so they were in dire need of an alternative rocket fuel for travelling through space to meet their loved ones. They were very desperate to do that and could not think a way for it.
So many governments of various countries started announcing millions of dollars in prize money to discover or invent any type of rocket fuel. This was a very noble opportunity for many scientists including retired scientists and other intellectuals to design or discover something that would make a good rocket fuel. Many scientist tried searching for something that was an alternative to previous rocket fuels but they failed except one young man.
There was this one young scientist whose name was Aprikot. He was a very enthusiastic and an intelligent young man who was in his early 30's. When he had heard that the rocket fuel was surely over he felt really bad because many of his loved ones lived on other planets which were in different star systems and thus would be very difficult and nearly impossible to meet them without fuel to propel rockets.
He did not care about the prize money which amounted in million of dollars that was to be given to the rocket fuel discoverer or inventor. The only thing that he wanted was that people should be able to meet each other without any restrictions or boundaries. So from that day he started working on to make a new rocket fuel.
To do that, next day he went to the marketplace to get supplies for his work. While he was walking on the road he saw a boy blowing bubbles in the air. After seeing that he realized that lots of air pressure was needed to make a bubble or bubbles form from the soap solution. But he did not think much about it at that time as he was overwhelmed thinking about the supplies which he had to buy. After buying supplies he reached home and lay a setup and did some experiments, of which all failed. Then he sat on a chair, stressed and thinking about the failures he had that day. While doing that he stretched out his arms and legs and also started thinking about the bubbles that were being blown by the boy on street. He kept on thinking about it for quite sometime and suddenly he became excited and got up the chair and went back to his experiment table.
At that moment he had come up with a brilliant idea that would never stop a man from entering space as long as sun lived.
He had devised the concept of acceleration of rocket through reusable magnetic unbreakable bubbles. According to the method, the rocket would work on solar cells and thus would be a solar powered rocket that would give instantaneous energy to operate a system that would propel the rocket. That system involved use of electric power to push hydraulics which further would be used to push an unbreakable steel bubble out of the rocket such as a gun firing a bullet. Only difference would be that bullet here would be lot heavier and the firing mechanism would be way bigger and would sync with the amount of propulsion required. Also in this method of propulsion, the steel bubble that would be pushed out would get magnetized instantaneously as it gets out and out of contact of rocket and thus would return back to the rocket for further propulsions due to magnetic capturing of that bubble. He also had thought that for bigger rockets more than one bubble could be used to propel rockets forward and in space. Since the bubble or bubbles would be heavy they would provide enough reaction to move or propel the rocket forward according to Newtons laws of motion and laws of conservation of momentum.
Now to prove this concept he made a miniature model of that propulsion system. It took him 8 days to make the model but he made it and it worked very efficiently.
This model was then shown to the scientists and then to the world. The concept was approved immediately for putting it into practicality for propulsion of bigger rockets.
He was then awarded $500 million for such a wonderful invention but he was only contented when the system worked for bigger rockets and that people knew no boundaries.