Hi Alexandre, 1. There is squeaksource.com/MSQ and it contains "KeplerEquations" and planets
2. Have a look at http://www.chronos-st.org => you know time often relates to space 3. Coquet has a Mars simulation/Atmospheric simulation see screenshots and the last video on http://www.opencroquet.org/index.php/Screenshots/Videos Maybe this is of any use Bye T. -- GMX DSL Doppel-Flat ab 19,99 €/mtl.! Jetzt auch mit gratis Notebook-Flat! http://portal.gmx.net/de/go/dsl
