This poll was poorly worded and perhaps should have read " What's your fave planet - apart from earth?" but that would have killed the banter
Mine, apart from earth of course, would be Mars as it's the ONLY planet [when well placed] you can look down on its surface with a telescope and see, over consecutive evenings, it slowly rotating - the martian day is 40min longer than ours

So it's Mars for me - my pics below includes moons Phobos and Demos