Celestia Forums

I was looking at the orbits of the planets around Sol, which have always been identical in terms of tilt (when viewed from a certain angle, the orbits look like a single line). One day, for some reason, the orbits suddenly became uneven in tilt. See the attachments for examples. Is this a bug, or di...

how to build Celestia is described in the WikiBook at http://en.wikibooks.org/wiki/Celestia#Development It came up with 1 error: GCC 4.2 is not compatible with the Mac OS X 10.4 SDK (file POConverter.m) Is there a way to get around this? Also, in that line, it says 'Mac OS X 10.4'. That must be the...

I want to change the flare color of some star-spectral-types, and it appears to me that the only way to do that is by modifying render.cpp. I usually use and prefer a binary installation, but I need to run my own mod this time. I've never compiled something from source, and I can't find any tutorial...

I was studying the moon Titan, and learned that it has a lot of methane on it's surface. I then looked up more about the chemical and learned that methane's flash point is -188 C. I don't understand this. Don't we use methane is common-day objects on earth? What about the flames caused by entry with...

Ah... One addon has a 3d model that needs to be in the models directory. Works now.

Hello. I've been using Celestia (1.6.1) for several months now, and I just downloaded a whole lot of addons for it. Now it crashes whenever I right-click or double-click. It might be a problem with an addon, but since I have so many to look through, I wanted to make sure that there isn't already a q...