* Earth's Seasons: Seasons are caused by the tilt of Earth's axis, not its position relative to the sun. The Northern Hemisphere experiences summer when it's tilted towards the sun and winter when it's tilted away.
* Earth's Orbit: Earth orbits the sun in an elliptical path, but this doesn't significantly affect the seasons.
To understand seasons, focus on the tilt of Earth's axis, not its position east or west of the sun.
