PocketMatrix

I also agree with the star-orbitting concept, but then you have the extra-solar planets which are hurtling through open space with atmospheres and moons. Perhaps a planet should be a carbon/metal ovoid/sphere that possesses an atmosphere, and not one single of its satellite can be no larger than 0.05% of the planet's mass. (All of the moons in our solar system are 0.01% exactly, mysteriously, if I recall correctly. So that 5 gives it a little leeway).