Why the earth is rotating along its axis?

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Discussion Overview

The discussion revolves around the reasons for Earth's rotation on its axis, the historical context of this rotation, and comparisons with other celestial bodies, particularly focusing on the rotational characteristics of planets like Uranus and Venus. Participants explore theories of planetary formation, the effects of gravitational interactions, and the nature of rotation in various celestial bodies.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants inquire about the origins of Earth's rotation and whether rotation is a common characteristic among all planets.
  • Uranus is noted to have an axis that is almost perpendicular to its orbit, prompting questions about the implications of such an orientation.
  • A hypothesis is presented suggesting that a significant impact during Earth's formation could have initiated its rotation.
  • Venus is discussed in terms of its retrograde rotation and the relationship between its axes of rotation and revolution.
  • Some participants assert that the Moon does not rotate on its axis, while others clarify that it does rotate, leading to a discussion about the visibility of its "dark side."
  • There is a debate regarding the nature of Uranus's tilt and whether it has a rotational axis that points towards the Sun consistently or changes over time.
  • Participants express uncertainty about the mechanisms behind Uranus's extreme axial tilt and whether it could be due to past collisions with other celestial bodies.

Areas of Agreement / Disagreement

Participants express multiple competing views regarding the nature of rotation in celestial bodies, particularly the Moon and Uranus. There is no consensus on the specifics of Uranus's axial tilt or the implications of its orientation.

Contextual Notes

Some statements rely on assumptions about planetary dynamics and historical events that are not universally accepted or verified. The discussion includes references to observational data that may vary over time.

  • #31
mehul ahir said:
or what type of forces made Earth rotating around the earth?please answer me in detail i m in very biggest trouble

Think about what happens when you pull the plug from a tub of water. Water from all directions rushes toward the drain, and the forces that the center of the drain are not perfectly symmetrical. That is to say, not all of the water molecules collide with one another "head-on." Some will pass by one another slightly to the left or the right.

Eventually, slightly more particles will pass to one side than the other. This on even force causes all the water around the drain to begin spinning in one direction. This is essentially what happened to the collapsing cloud of dust and gases that eventually formed the earth. Gravity caused them to collapse rapidly, rushing quickly toward a central point, and slight imperfections in the symmetry of the collisions made them spin.
 

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