Let's say, for the sake of argument, that Venus was in the orbit of Earth (and also had a moon like ours). Let's also say that Mars was a superterra with twice the mass of Earth (and its own moon/s), but in the same orbit. Earth and its moon exist somewhere between these two. What should its orbit be?
I'm trying to be more specific as to a question I had asked before involving having three inhabitable planets in our solar system: http://www.bautforum.com/showthread....tem?highlight=
I wanted to use this for a scifi setting I'm planning to write, but I wasn't sure where to put the orbits of three Earth-like worlds.
Thanks in advance!