[TomServo]

Celestia is a fascinating program. Gonna take me awhile to play with it. ;-)

Been too busy zooming all over the place with it, so far.

[martin_fierro]

Try this:

Use the "L" command (repeatedly) to accelerate planet movement to 1000x.

Then, using the "Solar System Navigator", and while the planets are spinning around, pick another moon to travel to (say, Europa at Jupiter).

It's cool to watch the moon whip around with its mother planet in the background.

[sigSEGV]

One of the first things a person realizes playing with Celestia is just how excruciatingly slow lightspeed is.