2 questions

[Parduz]

Hello. I'm a simply user of Celestia, so maybe my questions are stupid, but i will try.

1) There's someone able to "build" the most important systems of the Asimov "Foundation" saga? It is a hard thing?

2) I don't know if Celestia object orbits are "predefined" or calculated: there's a way to say "i launch a object from the Earth surface, and i will see where it go with a given speed and angle"?

Thanks!!

[marc]

1) There's someone able to "build" the most important systems of the Asimov "Foundation" saga? It is a hard thing?

Is that the series with the spiral town, speckles and road?
As to how hard it is it depends how good you want to make it. Rassilon's systems are a good benchmark. There is plenty of information in this forum to help you if you wanted to have a go yourself. If you have a little astronomy knowledge, artistic flair, and some skill with manipulating images you should have no problem.

2) I don't know if Celestia object orbits are "predefined" or calculated: there's a way to say "i launch a object from the Earth surface, and i will see where it go with a given speed and angle"?

All motion in celestia is predefined and does not respond to user input. There isnt a way to do this in celestia. Ive added gravity to my hack of Celestia (see below). With a bit of practice you might be able to achieve what your asking but you have to 'maneuver' to the start point.

[John Van Vliet]

i think there mybe a Trantor out on the net somewere