Slow return trip to where? There’s plenty of both on Earth, so no point. But it may be easier to send bulk resources from Titan to the Moon or HEO than from Earth. I think the delta-V is lower, anyway.
> when I hang it from the ceiling everything will line up with their actual azimuth to the horizon
I guess that makes sense at high latitudes. More generally, if you align the plane of rotation of the orrery with the ecliptic, and rotate it just right, then the positions of the sun and planets wrt the centre of the orrery should match their actual altitude and azimuth.
Unfortunately long press didn't work for me with a trackpad (Safari on macOS), so wasn't able to flag at all. Maybe add a test for ctrl-click or shift-click?
There's an old quip about aircraft design that "a plane isn’t ready to fly until the documentation is heavier than the airplane". Can't find a source for it though.
Well, Quake and VRML were contemporaneous, but VRML was a plugin in the browser — it was never as fast as Quake, and not intended as a game engine, though there were many worlds and models built in VRML that were at least as detailed as the Quake maps.
https://timepasses.net/
https://sunclock.net/
https://degreeswhat.com/
https://bigclock.app/
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