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  • Solar System Orbits: Understanding the Direction of Planetary Motion
    The vast majority of celestial bodies in our solar system orbit in the same direction - counter-clockwise when viewed from above the Earth's North Pole.

    This includes:

    * Planets: All eight planets orbit the Sun in a counter-clockwise direction.

    * Moons: Most moons orbit their planets in a counter-clockwise direction.

    * Asteroids: Most asteroids in the asteroid belt also orbit the Sun in a counter-clockwise direction.

    * Comets: While comets can have highly elliptical orbits, they generally follow the same counter-clockwise pattern.

    This common direction of orbit is a result of the protoplanetary disk, the swirling cloud of gas and dust from which our solar system formed. The conservation of angular momentum meant that the material in the disk rotated in a single direction, and this direction was inherited by the celestial bodies that formed from it.

    However, there are some exceptions:

    * Venus: Venus rotates clockwise on its axis, although it still orbits the Sun in a counter-clockwise direction.

    * Uranus: Uranus is tilted on its side, so its rotation is almost perpendicular to the plane of its orbit.

    These exceptions are thought to be the result of major collisions during the early solar system's formation.

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