HW 3 problem - Columbia University
To understand why we have seasons, we need to look at the relations between the Earth and the sun. The Plane of the Ecliptic is the plane of the Earth's orbit around the sun. Most of the planets in the solar system also orbit on or near the plane of the ecliptic (you can see that the planets (except Pluto) are more or less lined up, instead of ... ................
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