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Rotation - Astronomy | | Rotation - Astronomy: Encyclopedia II - Rotation - Astronomy | | In astronomy, rotation is a commonly observed phenomenon. Stars, planets and similar bodies all rotate around their axes, while planets also rotate about a star such as the Sun, and moons also rotate about a planet. The motion of the components of galaxies is complex, but it usually includes a rotation component.
One consequence of the rotation of a planet is the phenomenon of precession. Precession has the overall effect of introducing a long-term "wobble" in the movement of the axis of a planet. For example, the tilt of the Earth's ...
See also:Rotation, Rotation - Allowed rotations, Rotation - Mathematics, Rotation - Astronomy, Rotation - Physics, Rotation - Amusement rides | | | Rotation, Rotation - Allowed rotations, Rotation - Amusement rides, Rotation - Astronomy, Rotation - Mathematics, Rotation - Physics | | |
| | | Rotation: Encyclopedia II - Rotation - Astronomy
Rotation - Astronomy
In astronomy, rotation is a commonly observed phenomenon. Stars, planets and similar bodies all rotate around their axes, while planets also rotate about a star such as the Sun, and moons also rotate about a planet. The motion of the components of galaxies is complex, but it usually includes a rotation component.
One consequence of the rotation of a planet is the phenomenon of precession. Precession has the overall effect of introducing a long-term "wobble" in the movement of the axis of a planet. For example, the tilt of the Earth's axis to its orbital plane (obliquity of the ecliptic) is currently 66.5 degrees, but this angle has slowly changed over time due to the action of precession.
See also: orbital period, oblate, orbital revolution
Other related archivesChair-O-Planes, Coriolis effect, Earth, Euler angles, Euler's rotation theorem, Ferris wheel, Gear couplings, Mathematically, Stars, amusement rides, angular frequency, angular momentum, angular velocity, astronomy, axle, carousel, centrifugal force, centripetal force, circular, circular motion, circular orbit, curl, cyclic permutation, door, driveshafts, flight dynamics, frequency, galaxies, group, gyration, gyroscope, hinges, inverse, joint, moment of inertia, oblate, obliquity of the ecliptic, observation wheel, orbital period, orbital revolution, period, planets, precession, propeller, right-hand rule, rigid body, rigid body angular momentum, roller coaster inversions, rolling, rotation (mathematics), rotation around a fixed axis, rotation group, rotation matrix, rotational energy, rotations in anatomy, scissors, screw, shoulder, spin, torque, translation, turns, universal joints, wheel
 Adapted from the Wikipedia article "Astronomy", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki |
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