If the Earth were adrift in space, what would happen to its atmosphere?

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Discussion Overview

The discussion explores the hypothetical scenario of Earth drifting away from its orbit and the implications for its atmosphere. Participants consider the cooling process, the role of the Earth's core and greenhouse gases, and the potential changes to atmospheric composition over time.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant suggests that if Earth were to drift away from the Sun, it would cool rapidly, but the core and magma might provide some warmth initially.
  • There is a question about the equilibrium temperature of the Earth in this scenario and how quickly it would reach temperatures sufficient to liquefy and freeze oxygen and nitrogen.
  • Another participant raises a point about temperature drops at night, proposing that a rough estimate could be twice the temperature drop per day.
  • A reference to simulations is made, although details are not provided in the posts.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the specifics of temperature changes or the timeline for atmospheric changes, indicating that multiple views and uncertainties remain in the discussion.

Contextual Notes

Limitations include assumptions about the rate of cooling, the effects of the Earth's core, and the definitions of equilibrium temperature and atmospheric states over time.

Who May Find This Useful

This discussion may be of interest to those exploring theoretical astrophysics, climate science, and atmospheric chemistry in extreme scenarios.

CCWilson
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If the Earth were slung out of its orbit, away from the Sun's light and warmth, what would happen to its atmosphere? How quickly would it cool? The core and magma would provide some warmth to the surface, but even with our greenhouse gases holding in heat, I assume that everything would turn chilly very quickly. Anyone have any idea what the equilibrium temperature would be? How quickly would it be cold enough to liquify and freeze oxygen and nitrogen? A hundred or thousand years after its escape from our solar system, what would its atmosphere, if any, be like?
 
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Well, how much colder does it get at night? A good guess would be twice that per day.
 
// Fixing post give me a second
 
Last edited:

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