https://turbowarp.org/1312764663/fullscreen?turbo USE TURBO MODE, and press the spacebar for more options. Control your rocket with arrow keys. Press s to save your position to come back to later. Copy the code and paste it into the bar to load a saved position.
All distances and masses are to scale. The only real inaccuracy here is that the Earth is fixed. Challenges: 1. Escape the Earth's gravitational well 2. Orbit the moon 3. Perform a gravitational slingshot maneuver around the Moon (try using the moon both to speed up and to slow down) 4. Stay at all 5 Lagrange points for 1 full orbit with minimal intervention