So, we just finished some important chapters in astronomy. After 8 months of not playing KSP, I got the urge to complete a mission just with math (no mission planner tool), just to see if I can. I wondered how accurate orbital mechanics are in KSP. Can I apply all the usual laws (Kepler, two bodies etc)? I remember reading something back in the days that Kerbin's year is too short for it's path, and some other stuff. So... can I head right into KSP with all the math from school or do I have to take some "special" physics into account? If there is a thread about this already, please link it to me! Thanks.