The 23.5 degree tilt in Earth’s axis of rotation creates a rise and fall appearance of the sun over the course of a year. During the winter solstice, the Northern Hemisphere is tilted at its farthest distance from the sun, bringing less light and colder temperatures.
The tilt of the Earth – not our distance from the sun – is what causes winter and summer. In fact, Earth is closer to the sun during winter than it is in summer months. Watch the video above to learn more.