Celestia – Real-time 3D visualization of space

(celestiaproject.space)

133 points | by LordNibbler 1 day ago

15 comments

  • dysoco 17 hours ago
    When I was a kid I used to play a bit with Celestia, but I remember I was pretty scared whilst using it... there was some kind of dread/anxiety I felt just looking at the vast void of space and something giant like Jupiter or Saturn next to it, I always thought an UFO or something was gonna pop out of nowhere.

    I don't know if this feeling is common or not but I do remember reading about someone here on on Reddit feeling a similar thing, I believe it to be similar to thalassophobia.

    • Rooster61 16 hours ago
      This. While it wasn't Celestia (I was playing around with Orbiter), I ran into a very similar, very specific scenario. In Orbiter, you can fly to planets using orbital mechanics a la KSP but on a true scale. Frustrated that I was having trouble getting to Saturn using a Hohmann transfer, I eventually said fuck it and just input coordinates that put me just a little ways outside of Saturn's atmosphere.

      Upon hitting the button to warp to the coordinates, I was presented with an entirely flat, beige plane. Thinking I had screwed up the coordinates, I began zooming out. Since Orbiter renders to scale rather than the scaled down planets in KSP, I began to realize that there was no mistake, and just how small my ship was relative to Saturn. It literally gave me a shiver. It's so hard for us humans to really perceive how mindbendingly big things are in space in a direct sense.

    • Verdex 15 hours ago
      I have maybe 2 hours total usage time with celestia from years ago.

      I still occasionally have pseudo nightmares from the pov of using celestia to orbit 'scary' celestial objects.

      I'm not exactly sure what the deal is because I never had any conscious reactions to using the program. But apparently it made some sort of impact.

    • aeve890 17 hours ago
      Same! I lost days looking for the most distant galaxies and traveling to them. I always felt the same anxiety of the emptiness thinking why the universe doesn't give us a way to explore it, why I was born so early or in a _lame low tech planet_ (in a lame low tech country) or how incredibly diverse could be the life out there. I remember being fascinated by the sheer number of galaxies and then "wait, this app doesn't even zoom _into_ galaxies", which is another level of infinityness, and that was just overwhelming. Man, I feel depressed now.
      • florbo 15 hours ago
        If you want to fly around galaxies and feel insignificant, Space Engine is pretty good for that. It's not a true simulation, as most things are procedurally generated unless an addon is installed, but it certainly captures the scale of things.
        • aeve890 14 hours ago
          I gotta check. Now I got my fix with Elite Dangerous.
  • vodou 23 hours ago
    Great project! Been using it for years together with VTS [1] to visualize real-time and propagated satellite positions and attitudes, and also star tracker and payload "beams".

    [1] https://timeloop.fr/vts/

  • a_c 22 hours ago
    If someone from celestia is reading this, the english documentation link is not working https://celestiaproject.space/cc/cel-guide-en (Accessed from https://celestiaproject.space/guides.html)
  • septune 17 hours ago
    Decades ago, I patched Celestia to add a Star Trek–style warp speed selector, only to realize that even at maximum warp, I was still crawling along like a snail. At least it was a fun hack.
  • tempodox 22 hours ago
    Newer versions for macOS can be downloaded from GitHub (despite the link name):

    https://github.com/celestiamobile/MobileCelestia/releases

    • florieger 22 hours ago
      That's the iOS repo.
      • tempodox 22 hours ago
        Despite the link name, you can find macOS downloads there.
  • moritonal 19 hours ago
    One thing I kind of always want to see when I find cool resources like this are "How are you funded?". Because if it's not clear then have to there's a high risk it's a rug-pull, virus or might one day be either. There's just too many secretive "Here's a super free perfect tool for you!" rug-pulls out there.

    "We're funded by the goodness of a team of volunteers" is a great answer.

    • aarond0623 17 hours ago
      Celestia had been operating for years. I was using it 20 years ago.
    • dotancohen 19 hours ago
      Are you new to the concept of open source?
      • moritonal 16 hours ago
        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 better at this.

        • OrderlyTiamat 15 hours ago
          It is my experience that if there is a github for a project like this, that's usually a much better source of information than the landing page.
        • hdNLouie 13 hours ago
          moritonal, did you also just `conveniently' forget: Github? And heinous:

          openAI: Microsoft has invested US$13 billion in OpenAI, and is entitled to 49% of OpenAI Global, LLC's profits, capped at an estimated 10x their investment.

          • moritonal 7 hours ago
            Sorry, but I don't understand your comment. Github exists sure, but many open source projects have turned sour due to bad funding models. And OpenAi, isn't any of the things it says it is.
  • anonzzzies 20 hours ago
    Hidden well enough on the linked site, but easy to find in search; there are mobile versions which work well on tablets etc I just found out. That's this monday lost!

    [0] https://play.google.com/store/apps/details?id=space.celestia...

  • sintezcs 12 hours ago
    Is it possible to run it on Meta Quest 3? Or maybe someone could recommend the similar project for a VR headset? Thanks!
  • i4k 22 hours ago
    This website does not work with Oculus Quest browser, it goes to the "oh noes" page, i guess the meta browser has some issues with the bot detection algorithm.
    • lifeinthevoid 21 hours ago
      Brave also exhibits this behavior, turning off shields fixes the issue.
  • stefanv 19 hours ago
  • aktuel 18 hours ago
    Is there an option to increase the font size? The text is unreadably small on my 28" 4k display.
  • CodeCompost 16 hours ago
    I'm surprised there isn't a version that runs on browsers using Emscripten.
  • dvh 18 hours ago
    Why was it removed from debian?
  • trklausss 18 hours ago
    Now somebody gotta do it as a mod for KSP, it would be sick to have this level of detail and launch missions through the solar system.

    Yes, I know Real Solar System is a thing, but still :D