Finally, for moderate weather, a planet must be tilted to the proper angle and be held in place ​ — in the case of earth, a function fulfilled in part by the gravitational pull of our moon.
وأخيرا ،‏ ان ميلان محور الكوكب بزاوية مناسبة وثابتة مهمّ حتى يكون مناخه معتدلا .‏