I created a rocket on Kerbal consisting of four fuel tanks, two decouplers, two engines, a parachute, and a pod to contain the pilots or kerbals. It was not a SSTO, single stage to orbit, rocket; I had to decouple the bigger part of my rocket when it ran out of fuel and only be left with a tiny rocket to orbit the planet. Newton's laws helped me get into space. By using the first law, inertia, I was able to put my rocket on full throttle and that helped it to launch in the first place. By using the second law, mass times acceleration = force, allowed me to get into to space and distribute weight equally throughout my rocket. By using the third law, for every action there is an equal and opposite reaction, I was able to keep my rocket in space because of the equal forces of gravity and the gravitational pull. Also, I used the w,s,a,d keys in order to steer my rocket and the space bar to decouple parts of my rocket. Once I got into space I had to create a maneuver to show the apoapsis, which is the farthest point from where I was orbiting, and the periapsis, which is the closest point to the planet where I was orbiting. In order to go forward and in the direction I wanted, I had to use proburn, and once I had to decide when to change my trajectory to keep going in my orbit, I had to go full throttle for a certain amount of time; this is known as delta-v. I had to use more delta-v because the gravitational pull was growing stronger the closer I got to the object, the planet, and I had to alter my trajectory; this is known as the oberth effect. Finally, once I have orbited, I use retroburn to go in the opposite direction I was going in in order to reenter the planet.