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.<p>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).