Why Does Venus Rotate Differently?

  • Context: Undergrad 
  • Thread starter Thread starter Qyamat
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Discussion Overview

The discussion centers on the unusual rotation of Venus, specifically why it rotates in a retrograde direction compared to most other planets. Participants explore various hypotheses regarding its rotation, including historical impacts and tidal interactions, while also addressing controversial theories.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant questions why Venus does not rotate counterclockwise like most planets.
  • Another suggests that a significant impact during the early solar system formation could explain its rotation.
  • A different viewpoint raises the possibility that Venus's slow rotation might be related to its unique rotational characteristics.
  • Some participants mention that the dominant hypothesis involves tidal interactions with the Sun affecting Venus's rotation.
  • One participant introduces a controversial theory by Velikovsky, proposing that Venus was ejected by Jupiter and did not form like the other planets, though they express skepticism about this idea.
  • Another participant critiques the mention of Velikovsky, comparing the reception of his ideas to those of fringe theories, indicating a strong disagreement with this perspective.

Areas of Agreement / Disagreement

Participants express multiple competing views regarding the reasons for Venus's unique rotation, with no consensus reached on the validity of the various hypotheses presented.

Contextual Notes

The discussion includes references to historical impacts and tidal interactions, but lacks detailed exploration of the assumptions underlying these theories. The mention of Velikovsky's theory highlights the contentious nature of some explanations.

Qyamat
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Hi,
My question is that why does venus not rotate counterclockwise while most other planets do?
 
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It was probably hit by something rather large during the early stages of the formation of the solar system.
 
This is likely to be wrong but could it be something to do with its very slow rotation??

The Bob (2004 ©)
 
Just use Google and type in the words "venus" and "rotation" - you will see that the dominant hypothesis involves tidal interaction with the Sun.
 
Another possible explanation, though highly controversial, was put forward by Velikovsky, and is that Venus didn't originate like the rest of planets from the solar nebula 4'5 billion years ago, but was ejected by Jupiter as a comet, becoming later the planet that we see in the mornings and the evenings. But I wouldn't put very much money in Velikovsky theory
 

Even mentioning Velikovsky in a forum that takes science seriously will get rotten food thrown at you (unless you spit when you say it).

You are extremely generous in your description. Velikovsky is "controversial" in the same way Moon Hoaxers are.
 

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