Skip to main content
Worldbuilding

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

15
  • $\begingroup$ Are you asking what the visual limit of a sphere in your field of view is, or do you want the gravity and orbits to also be realistic? $\endgroup$
    – dubious
    Commented Mar 30, 2021 at 11:43
  • 2
    $\begingroup$ I'm asking about realistic and stable celestial body constellations. I'll update the question accordingly. $\endgroup$
    – fgysin
    Commented Mar 30, 2021 at 11:57
  • 3
    $\begingroup$ Very obviously, the maximum angular size of a celestial body in arc seconds is 180 degrees times 60 minutes times 60 seconds equals 648,000 arc seconds. For example, the Milky Way in Earth's night sky extends from horizon to horizon. See a great panoramic picture. $\endgroup$
    – AlexP
    Commented Mar 30, 2021 at 12:05
  • 2
    $\begingroup$ @AlexP can you double check on that? Seems to me you're describing a Celestial object, not a Celestial body. As well it seems to be an answer, not a comment. $\endgroup$
    – Trioxidane
    Commented Mar 30, 2021 at 14:13
  • 2
    $\begingroup$ @AlexP I thought this was obvious, but apparently it wasn't... I'm interested in celestial bodies e.g. stars/planets/moons/... Also given my assumptions above 180° is obviously impossible, since at that time you would be squashed flat between the two touching surfaces... That is neither a stable arrangement, nor survivable. $\endgroup$
    – fgysin
    Commented Mar 30, 2021 at 14:18