Changing the rotation of a natural satellite

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Discussion Overview

The discussion explores the feasibility of changing the rotation of a natural satellite, such as a planet or moon, under hypothetical conditions of unlimited resources. It encompasses theoretical considerations and speculative engineering approaches.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant questions the plausibility of altering a satellite's rotation, suggesting that even with an infinite budget, the task may be beyond reach.
  • Another participant proposes building large engines on the equator to exert force on the satellite, or alternatively, impacting it with a massive object traveling in the opposite direction to its current rotation to reverse its angular momentum.
  • A different viewpoint suggests that the size of the engines may not be critical if the approach allows for sufficient time, indicating that patience could be a factor in achieving the desired outcome.
  • A later reply expresses uncertainty about the effectiveness of the first proposed method, indicating a need for further exploration of its viability.

Areas of Agreement / Disagreement

Participants present multiple competing views on the methods to change rotation, and the discussion remains unresolved regarding the feasibility and effectiveness of the proposed approaches.

Contextual Notes

The discussion does not clarify the assumptions underlying the proposed methods, such as the physical limitations of materials or the specific criteria for success in changing rotation.

LF_Ent
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Pardon me for my ignorance -- and naivety, if this question idicates it -- but would it be possible to change the rotation of a planet or moon? We'll assume the hypothetical people attempting this project have a nearly infinite budget, but even with quadrillions of dollars, is this even plausible? Thanks.
 
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Build very big engines on the equator - push out sufficient amount of mass at high enough speed to reverse the planet/moons angular momentum.
Hit planet/moon with a very big object going very fast in the opposite direction to it's current rotation
 
The engines don't have to be big if you are very patient. All depends on your success criteria.
 
Oh. I thought about the first one, but wasn't sure if it would really work. Thanks.
 

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