The Impact of a Moonless Earth: Effects on Tides and Beyond

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Discussion Overview

The discussion explores the hypothetical scenario of a Moonless Earth, focusing on the potential effects on tides, seasonal changes, and marine life. Participants consider both immediate and gradual consequences of the Moon's absence.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants suggest that without the Moon, tides would cease to exist, impacting marine life that relies on tidal patterns for survival.
  • One participant proposes that the Earth's axial tilt, currently around 23 degrees, could increase to about 30 degrees without the Moon, leading to more extreme seasonal changes.
  • There is a discussion about the timing of gravitational effects if the Moon were to disappear, with some believing effects would be felt instantaneously, while others argue it would take time for the gravitational field to adjust.
  • Another participant humorously notes that the absence of the Moon would also confuse moths, which depend on lunar light for navigation.
  • A reference to a fictional scenario from "Time Machine" is made, where the Moon's destruction leads to disasters on Earth, adding a cultural perspective to the discussion.

Areas of Agreement / Disagreement

Participants express various viewpoints on the consequences of a Moonless Earth, with no consensus reached on the timing of gravitational effects or the full extent of ecological impacts.

Contextual Notes

Some assumptions about the nature of gravitational effects and their timing remain unresolved, and the discussion does not delve into specific scientific models or empirical data.

Who May Find This Useful

This discussion may interest those curious about astrophysics, ecology, and the interplay between celestial bodies and terrestrial life.

stoned
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No Moon :(

What would happen to the Earth if suddenly Moon was gone?Except no more tides I can not think of something else.
 
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stoned said:
What would happen to the Earth if suddenly Moon was gone?Except no more tides I can not think of something else.

I can think of something else.

at present the Earth's axis is inclined around 23 degrees

the moon helps keep this angle small

if there were no moon then this tilt angle might slowly increase to 30 degrees, say, and then the changes of season would be more extreme, even harsh.


Also your question is like asking "what would it be like if suddenly all the horses were gone, and women had no breasts?"

it is a strange idea. a kind of anti-poem
 
If the moon disappeared, would we feel the effect immediately, or would we feel the effect more gradually?

Some people think that gravitational differences can be sensed instantaneously.

Some think that we would feel the effects at the speed of light.

I personally think that it would take time for the gravitational field to re-orient and the effects would not be felt for even longer than those expected under speed-of-light scenarios. Perhaps LISA can help settle this.
 
It would be a disaster for marine life, many of which depend on tides for survival.
 
Chronos said:
It would be a disaster for marine life, many of which depend on tides for survival.

And all the moths in the world would get lost ;)
 
a funny & serious response...
http://www.straightdope.com/columns/001027.html
 
Did you guys watch "Time Machine " few years ago?
When our hero went into the future, humans were mining Moon or something like that and caused moon to break in half and huge disaster followed on Earth.Cool :biggrin:
 

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