Toggle counter-rotation to freeze and unfreeze Earth's rotation.
Increase "dt" to speed up the simulation (with degraded precision).
Drag mouse to rotate 3D model. Hold shift key to zoom in and out.
Delay between frames: ms.
Redraw dt: .
Integration dt: .
The IAS15 integrator is a new high-precision integrator
by Rein and Spiegel.
Updated 2011 Apr 11