Hey there friends, I'm currently world building for a story and potentially a graphic novel. I'd describe the universe as a fair blend of high-fantasy/spirituality/science. While there's a lot of "magic" within the world, I'd like the "material plane" to be pretty solidly grounded in correct and familiar physics. So, I've some questions to pose: 1.) Within a single-star system (unary?), would it be possible for a planet to form and continue to exist with Earth-like size and conditions, in a sun-synchronous orbit (like our moon's geo-synchronous orbit)? 2.) If one could indeed exist, what might the conditions be like? With one hemisphere always facing the sun: What would ocean currents be like? Weather? Plate tectonics? etc... 3.) Would it be feasible for said planet to have one or two small moons orbiting it? 4.) How might these things change/would these conditions be possible in a binary star system? Any information that anyone could lend would be appreciated immensely! Thank you!