Planets Do Planets Around Other Thesis

At the Poles, the Sun circles around the horizon forever. At the Equator, it rises vertically at the East point on the horizon, passes directly overhead, and then sets vertically at the West point on the horizon (Seligman). These same mechanics should apply for other solar and planetary systems as well.

As an example, the seasons on the other planets in our solar system compare to the seasons on the Earth. Planets, such as Mercury, Venus and Jupiter, which have a tilt near zero or 180 degrees, so that their axis of rotation is perpendicular to their orbit, have no seasons. Planets, such as Mars, Saturn and Neptune, which have a tilt similar to that of the Earth, have seasons similar to the Earth (although all three of those planets, being further from the Sun, have longer seasons, and colder ones, than the Earth). Planets, such as Uranus and Pluto, which have a tilt close to 90 degrees, so that they are rotating on their "side," and can have one pole or the other face the Sun for long periods of time, have extreme seasons, in which even the planet's Equator experiences considerable variations in temperature (Seligman). Astronomers and scientists believe that since all objects in the universe were part of the same "big bang," the rotational characteristics, orbital planes, and determination of seasonal changes should all follow the same physics, mathematics, and mechanics that apply in our own solar system. Bibliography Imhoff, Cathy. "Planets." n.d. Scholastic. 31 Mar 2009 . O'Connell, James. "Planet." n.d. Science Encyclopedia. 31 Mar 2009 <Planet>. Seligman, Courtney. "Seasons on the Other Planets." n.d. cseligman.com . 31 Mar 2009 . WordNet Search. n.d. 31 Mar 2009 . Bibliography.....