The planets themselves don't directly cause seasons. Seasons are caused by the tilt of a planet's axis of rotation relative to its orbital plane (the plane of its orbit around the sun).

Here's how it works:

1. Earth's Tilt: Our planet is tilted on its axis at approximately 23.5 degrees. This tilt means that different parts of the Earth receive varying amounts of direct sunlight throughout the year.

2. Summer and Winter: When the Northern Hemisphere is tilted towards the sun, it receives more direct sunlight and experiences summer. At the same time, the Southern Hemisphere is tilted away from the sun, experiencing winter.

3. Equinoxes: Twice a year, during the spring and autumn equinoxes, the Earth's axis is neither tilted towards nor away from the sun, resulting in approximately equal day and night hours across the globe.

Important Note: While the tilt of the axis is the primary driver of seasons, the planet's orbital path and distance from the sun can also have minor effects on temperature differences throughout the year. However, these effects are far less significant than the axial tilt.

Other Planets:

* Mars: Mars also has seasons due to its axial tilt of about 25 degrees.

* Uranus: Uranus has extreme seasons because its axis is tilted almost 90 degrees, meaning that one pole is facing the sun for decades at a time.

In conclusion, while the planets themselves don't cause seasons, their axial tilt is the crucial factor determining the variations in temperature and daylight hours that we experience throughout the year.