What Would Happen to Humanoid Bone Structure If the Moon Crashed Into Earth?

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Discussion Overview

The discussion explores the hypothetical scenario of the Moon crashing into Earth and its potential impact on the bone structure of humanoid life that might evolve afterward. Participants consider the implications of such an event on evolutionary processes and environmental conditions over a long timescale.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • Some participants suggest that the basic bone structure of humanoid life would not differ significantly from ours, as evolution adapts organisms to their environments rather than to singular catastrophic events.
  • Others argue that the Moon's relatively small mass compared to Earth (1.2%) would not lead to substantial changes in bone structure.
  • A participant introduces the idea of a "mass extinction—repopulation" scenario, indicating that a lunar impact could drastically alter the environment, potentially affecting evolutionary pathways.
  • There is a discussion about the effects of reduced tidal activity on life forms, particularly undersea life, with one participant speculating that this could have influenced the evolution of terrestrial ancestors.
  • Another participant notes that while tidal activity would be reduced, it would not completely disappear due to the influence of solar gravity and Earth's axial tilt.

Areas of Agreement / Disagreement

Participants express differing views on the extent to which a lunar impact would affect the evolution of humanoid bone structure, with no consensus reached on the implications of such an event.

Contextual Notes

Participants acknowledge the complexity of evolutionary processes and the potential for various environmental factors to influence development, but do not resolve the uncertainties surrounding these scenarios.

Lord Squid
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Hi all,

This is a bit of a bizarre question, but:

If some way, some how, the moon crashed into Earth... then (oh so many) years later humanoid life appeared, what might its bone structure be like in contrast to ours?

That is all
 
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There's no reason to think that it would be any different on a very basic level, since we evolved to match our environment and the moon crash thing wouldn't change things as much as living on a different planet would. There would still be vertebrates, invertebrates, plants, fungi, etc. and anyone of them could end up being an intelligent and therefore dominant species.
Lest you think that I wasn't paying attention, the term "humanoid" to me indicates a shape rather than a structure.
 
Lord Squid said:
If some way, some how, the moon crashed into Earth... then (oh so many) years later humanoid life appeared, what might its bone structure be like in contrast to ours?
The Moon's mass is only 1.2% of the Earth's mass. Why should there be any significant changes to the bone structure?
 
A.T. said:
The Moon's mass is only 1.2% of the Earth's mass. Why should there be any significant changes to the bone structure?
I think that he's going for the "mass extinction—repopulation" scenario. You have to admit that a lunar impact would to a large extent bugger up our environment.
 
Thanks Danger for the great response!

So... the change of the shape (sorry, wrong terminology on my part there) of the life forms would be pretty much the same, that's super good to know.

There would be much less tidal activity also... What possible things might happen to undersea life?

again thank you so very much
 
Lord Squid said:
There would be much less tidal activity also
Maybe our ancestors would have never made it out of the water, if they had not stranded during a low tide one day. Thanks Mr. Moon!
 
Well, tides wouldn't completely disappear. Solar gravity and Earth's axial tilt also contribute.
 

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