Why does earth experience seasons?

What causes the earth to experience different seasons? Have you ever wondered why the earth experiences Fall, Winter, Spring, and Summer? Did you know that our four seasons exist because of the tilt of the earth on its axis and because of the earth's orbit around the sun? read more

Long, long ago, when Earth was young, it is thought that something big hit Earth and knocked it off-kilter. read more

Earth’s distance from the sun does change throughout the year, and it’s logical to assume that an increase or decrease in a sun-planet distance could cause a cyclical change in the seasons. But – in the case of our planet – this change is too small to cause this change. read more