sawaal.com |
The axial inclination of a planet is a measure of whether the planet is in the prograde (the natural direction of the rotation of most bodies of our solar system) or in retrograde (ie east to west) rotation. The tilt angle is measured relative to the orbital plane of a planet. An inclination between 1 and 90 degrees is considered to be a progress rotation (the Earth's tilt is 23 degrees, in a program rotation), a 90-degree tilt is considered vertical, and neither a program or retrograde. However, bending of anything over 90 degrees is considered retrograde rotation. The axial tilt of the planet Arun is about 98 degrees and the tilt of Venus is 177 degrees. So the rotation of both of them is considered to be retrograde rotation.
Venus
Currently, the most popular theory states that Venus actually rotated in the same direction as the rest of the planets. But after some time, due to some unknown reason, the planet changed its direction. It can also be caused by body colliding.Venus is also in a spin-orbit resonance with Earth and is believed to have influenced the rotation of Venus. The moving planets exert gravitational forces on each other. In our solar system, 3: 2 resonance is quite common. The Sun and Mercury are in a 3: 2 lock (one day on Mercury is 58.646 days and one year is 87.969 days), as are the planets and Pluto, and Jupiter and Hilda's asteroids.
Some people also believe that it may also be caused by major storms on one side of Venus's surface which changed its direction.
The newest theory that French astronomers have proposed is that Venus's rotation kept slowing down and eventually came to a halt and then the planet began to rotate in the opposite direction (called retrograde rotation). Sun's gravitational force on Venus and Mercury is very strong, making their orbit much slower and their days longer than their year. The period of transit of Venus is 254 days, while the year of a Venus is only 224 days. The reason for this is because of the very slow movement of the Sun by the extremely strong gravitational force. In fact, there is evidence to suggest that Venus's rotation speed is currently slowing.
0 Comments
Please do not enter any spam link in the comment box.