Add planets list. Opportunity to return the planet to its original position after the simulation. Opportunity control Aphelion and Perihelion. Velocity is good features but it would be great to be able to set Aphelion and Perihelion using the mouse. It would be great if the planet systems sharing between different PCs. For example through the Steam Cloud. Setting the radius of planets in a wider range. Setting the radius of the orbit of the planets in a wider range. Setting the mass of the planets over a wider range.
