Celestia Forums

Does anyone know of any other free programs that are such high-quality scientific simulators?

If you enjoy Carl Sagan, then you've probably read his excellent novel, Contact . I would have to suggest getting a copy of His master's voice by Stanislaw Lem, the most famed science fiction writer of Europe. The story begins with the same premise: a signal is coming from space, ostensibly from an ...

What are your favorite things to see in celestia? Where and when are they?
Is it the sunrise on venus? The sunrise on some extrasolar planet? The dance and swirl of celestial bodies? The various asteroid belts of our own solar system? (My own favorite.)

Perhaps occam's razor is applicable when it comes to questions of extraterrestrial intelligences. We have not yet encountered any such creatures, nor indeed any solid evidence of extraterrestrial life--perhaps life is much more unique and rare than some people think? If there are twelve trilliion ci...

I think I can understand why field gravity would be computation-expensive--you'd have to calculate every point in the field, right? (Or something like that.) So--and please bear with me--is it that Celestia's only connection to real-life stars and planetary bodies is the information in the ssc files...

I am new both to Celestia and newsgroups, so please bear with me. I have several questions: How accurate is the orbital prediction revealed in Celestia? If I want to see the exact position of the planets like 10 million years from now, can I do that? I have downloaded Thomas Guilpani's asteroid belt...