I believe that the only way to significantly change the orbit of a planet is to have it interact…
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What Effect Would the Removal of Saturn Have on the Rest of the Solar System?
I believe that this question has been answered very well on Physics Stack Exchange. The bottom-line is that Saturn’s…

Can a Moon Alternately Orbit Two Planets?
I don’t believe that the scenario you describe, were a moon is effectively shared by two planets in a…

How Did the Planets in Our Solar System Get Their Names?
As you suggested for a couple of planets, all of the planets, except for Earth, were named after Greek…

Rocky Planet Formation Through Hot Gas Giant Accretion
I believe that you are probably referring to the theory of planet formation which proposes that some rocky planets…

Online Interactive Sky Chart?
Sky and Telescope provides an online interactive sky chart that I think can provide the information you are looking…