Let's say that in my planetary system there is a gas giant around the size and distance from the Sun as Jupiter. I need the planet to be similar enough to earth to be able to be inhabited natural by humanoids. There are a few problems that I see with this below are the questions.
- How do I keep the moon from becoming ice locked like Europa or Triton? I need it to be catch and keep enough heat to be habitable.
- How do I protect the moon from both stellar radiation and the radiation of the gas giant?
- How do I keep the orbit stable enough to avoid catastrophic failure?
- How would the tides be affected by the gas giant (Assuming that they would be in the first place)?
- How do I keep the temperature semi-regular to allow life to evolve?
The closer to Earth you can make the moon the better.
This question differs from: Habitable moon of a gas giant: working out the sizes and distances in that I am asking about atmosphere, radiation, stability, tides and tempurature not distance or size