Universe Sandbox
I wonder if this can simulate the view of the sky from a planet's surface, given an interesting planetary system. I'd like to simulate what the day/night phases look like on the namesake planet of Kim Stanley Robinson's "Aurora" that I have just read... the moon orbiting a super-earth itself orbiting Tau Ceti.Or for that matter, the planet in some science fiction novel (can't remember the name) that orbits in some weird trinary (or higher) system and only has nightfall once a century (triggering a social breakdown everytime it occurs).