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Speed0 km/s
Altitude
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Speed
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Fuel left
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Stage
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Air drag
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Orbit speed here
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Escape speed here
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Highest point
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Lowest point
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Time for one lap
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Flight time
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Rocket Simulator

Fire a rocket sideways from a giant mountain and see what speed 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.

Launch height 200 km
Sideways launch speed 6.00 km/s
orbit
escape
Quick tries

Space launch · R reset · ↑↓ engine burns


Fire the engine in flight

Each press changes speed by 200 m/s. Watch which part of the path moves.

Fly it yourself
Engine points straight up
← backward↑ upforward →
Fuel 11.0 km/s
Rocket
Earth's spin

Space engine on/off · ←→ steer · A autopilot · R reset


Time warp

falls backorbitescapeflown path

Scroll to zoom, drag to move the view, double-click to let the camera follow again.


Missions

    Learn the basics

    Features

    Turn parts off to make the page simpler.