I'm hoping that some of you brilliant scientists can help me understand the realities of a world that I'm building for a story in a distant solar system... I’m building a sci-fi world for a story that takes place on a distant planet that is multiple times the size of earth, but hosts similar, larger, and more varied forms of life that survive on the same basic elemental building blocks as on earth. Without getting too bogged down in the potential scientific impossibilities of something like this, I do want to make sure that my fictional world doesn’t blatantly disregard the foundations of physics as we understand it. I would be grateful for any advice, thoughts, or ideas about how something like this might exist and how it would affect seasons, length of day/night, weather patterns, etc. I intend to take a lot of creative liberty with it, but want to be aware of the basics. Thank you in advance! Here are some of the questions I've been researching: What if a distant planet hosted life like ours but was three times the size of earth? How would this be possible? What if other planetsthe size of earth were closer to earth so that they were even larger and more visible in the sky than our earth’s moon? How would this be possible? How would larger planets that are closer together affect gravity, tides, day/night, temperature, weather patterns?