> To what degree does the Earth tilt on its axis?And the answer: 23.5 degrees. When compared to the plane of its orbit around the sun, the Earth tilts at a23.5 degree angle. According to NASA, this tilt changes during a cycle thataverages about 40,000 years, varying between 22.1 and 24.5 degrees.The tilt of the Earth on its axis is the force which brings us our seasons. Asthe Earth makes its way around the sun, the Earth's tilted axis always pointsthe same direction. As a result, hemispheres receive varying amounts of lightand varying weather patterns depending on the time of year. The gravitationalpull of the moon prevents any shift to the precarious 23.5 degrees, so each yearthe pattern begins anew.The closer to the poles, the more dramatic these changes become. In somenorthern parts of Sweden, Alaska, Iceland and Norway, summer months can bringnearly 24 hours of continuous sunlight. In winter, these same parts of the worldlive in days of nearly utter darkness, with some locations never evenexperiencing the rising sun from November to January. The tilt of the earth is also responsible for reversed seasons in the southernhemisphere. When the northern hemisphere is experiencing the longest days in theheat of summer, the southern is tilted in the opposite direction, experiencing the depths of winter.To learn more about the tilt of our Earth, check out the video below.