Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?

One of the most important consequences of Earth's axial tilt is the seasons. Seasons happen because the tilt points different parts of the planet toward the sun at different times of the year.

A year is the time it takes to orbit the sun. And we have seasons because the Earth's axis is tilted by 23 degrees. To see how that works we need to speed time up, so a year passes in just ten ...