I thought this might be interesting for authors trying to create a new world for a fantasy or sci-fi story. I am curious to know how an Earth-like environment could arise on an Earth-sized moon of a super-Jovian gas giant. I already have some ideas - the planet would have to be at a distance from its parent star where the star's energy and heat radiating from the planet would allow liquid water to form on the moon. The moon would have to be at a distance where its atmosphere wouldn't be ionized by the planet's radiation belts. I imagine the planet to be geologically active, thanks to tidal forces with its primary, resulting in many fault-block mountains and tectonic basins. My big concern, however, is the moon's orbit. How would an eclipse affect the moon's biosphere, especially when the planet could be as much as 100 times the size of the moon? How far out would the moon have to orbit its planet to not be adversly affected by the planet's radiation belts, and would the moon be tidely locked to the planet? What would it's orbital plane be to minimize the number and duration of eclipses from the parent star? And how would the planet look to observers on the moon? Would the planet have phases like our moon? Would it shift from north to south across the sky if the moon had an orbit like Titan's orbit of Saturn? Where could I look to find answers to all this?