Show Sun and planets.
From left to right -
    0 is the sun (a single star)
    1 is an asteroid belt
    2 has a toxic atmosphere
    3 is Earth-like
4 & 5  are airless
6 & 7  are gas giants
8 & 9 are ringed gas giants
   10 is a dust cloud
Note: This program allows a
maximum of eighteen stars &
planets per system.