Celestia

> and the download page looks like this: https://sourceforge.net/projects/celestia/ The page that states "Please do not download Celestia from this repository. This repository has been abandoned, and the new source and website are here and here, respectively." for the past four years ? Try: https://celestiaproject.space/download.html and https://github.com/CelestiaProject/Celestia for version 1.6.4 Both Celestia and Stellarium have "open data" file formats that come "standard" with downloads and "extra" from community forums - ie all manner of real and SciFi movie/novel objects can be added with name, bitmaps, orbits, etc.

That's rude. Yes, I've contributed to a few. However, here is a list of open-source software that've notoriously turned to unethical decisions when pressured into getting funding. Audacity: Free until 2021 when they were bought and introduced telemetry. Streamlabs: Open-source but tried to monetise and attack the OBS brand Bitwarden forks: Various forks of open-source code that included monetisation OpenOffice: Great desktop apps until bought by Oracle CCleaner: "free" software that contained trojens. HoverZoom: Chrome plugin sold by original dev, new update included spyware and ads. As I said, I don't mind if the answer is "we are volunteers who love this", but I do ask that formal webpage presenting a product, that even has an FAQ page, explains it's funding model. Their github (https://github.com/CelestiaProject/Celestia) is much bette

Celestia might also give you some ideas: https://github.com/CelestiaProject/Celestia

I'm not quite sure what your exact specifications are, but I think that Celestia[0] fits? [0] https://github.com/CelestiaProject/Celestia

Celestia is a rare Linux app not on Flathub, but it is available from Fedora's Flatpak repo, which in theory should be usable on any distro: https://github.com/CelestiaProject/Celestia/discussions/1988