🪐 Touch-and-Go Sampling — 2D Microgravity Descent and Contact

2D side-view companion of the touch-and-go sampling sim: asteroid surface gravity and escape speed from size and density, a velocity-profile descent controller with a 22 N thruster, contact energy, rebound estimate, back-away burn and propellant use.

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install