From Gravity Falls to Justice League, these great cartoon series only had 2 seasons, but were still flawless from beginning to end.

Earth's tilt relative to the sun causes the seasons. Earth is currently tilted 23.4 degrees relative to the plane where most objects in the solar system orbit the sun.

The actual time it takes for Earth to orbit the Sun is 365.242190 days. To keep the seasons from drifting, this additional time needs to be taken into consideration.

Earth on FX approaches, the show's creator, Noah Hawley, has said that he has thought about how the series will end.

Spring, summer, fall and winter – the seasons on Earth change every few months, around the same time every year. It’s easy to take this cycle for granted here on Earth, but not every planet ...

Earth's orbit around the Sun also plays a role in the changing of seasons. The orbit is not a perfect circle, but rather an elliptical shape. While this elliptical orbit does affect the distance ...