Simulation

Earth–Mars Transfer Simulation

live

Watch a spacecraft fly from Earth to Mars. The planets move at their real speeds, so you can only launch when they line up.

Screenshots

The trip is a long curve, not a straight line, and a launch window comes round about every two years.
Speed the clock up or slow it down, and zoom in or out.
Click a planet to see where it is and how fast it’s going.
A log lists every launch, journey and arrival as it happens.
Works with a mouse or a finger.

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