A cannon on top of a giant mountain fires a cannonball sideways. Set the speed, press Fire, and see what it takes to orbit Earth, or to escape it.
Fly a real launch from the ground: climb out of the air, tilt over, and build enough sideways speed to stay up.
Space fire · R reset · ↑↓ push
Each press changes speed by 200 m/s. Watch which part of the path moves.
Space engine on/off · ←→ steer · A autopilot · R reset
Scroll to zoom, drag to move the view, double-click to let the camera follow again.
Turn parts off to make the page simpler.