Why are there seasons on earth? Astronomy Our Solar System The Earth 1 Answer Peter Jan 13, 2016 Because the earth tilts at 23.5 degrees to the solar plane. Explanation: The picture above shows the earth as it moves around the sun with its tilt. The seasons are caused by whether the hemisphere you are in is tilting towards or away from the sun. Answer link Related questions What's the Earth's "absolute" speed? i.e. in relation to the central Sun, the first-order star,... How does density affect earth's layers? How fast does the earth rotate? How does this compare to the rotation of other planets? At what speed does the earth travel on its orbit around the sun? What would happen if the earth's rotation was faster or slower? How fast does earth rotate near the equator? How fast does the earth rotate per second? How fast is the earth traveling along its orbit? How fast does the earth rotate on its axis? How fast does the earth rotate in one minute? What is the formula to determine this? See all questions in The Earth Impact of this question 2195 views around the world You can reuse this answer Creative Commons License