Understanding Temperature in Space: Myth or Reality?

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    Space Temperature
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Discussion Overview

The discussion centers around the concept of temperature in space, exploring whether space can be said to have a temperature given its low density and the presence of matter. Participants examine the definitions of temperature and the implications of molecular motion in a vacuum.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant suggests that temperature is related to the kinetic energy of molecules and questions if space, having very few molecules, can have a temperature or if it is at absolute zero.
  • Another participant counters that space is not a perfect vacuum and contains a small number of protons per cubic meter, which allows for the assignment of a temperature, citing a common temperature of 100,000K.
  • A participant expresses curiosity about the composition of space, seeking clarification on what exists in it.
  • Another participant provides a link to a Wikipedia article for further information.

Areas of Agreement / Disagreement

Participants exhibit differing views on whether space can be said to have a temperature, with some asserting it does due to the presence of matter, while others question this based on the definition of temperature and the low density of particles.

Contextual Notes

There are assumptions regarding the definition of temperature and the conditions under which it can be applied to regions of space with minimal matter. The discussion does not resolve the implications of these definitions.

jd12345
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What is the temperature in space? For me temperature is a measure of how fast the moelcules of matter are moving - this is what i have read. If molecules have more kinetic energy they have higher temperature

But space contains nothing so no temperature? Does it have absolute zero temeprature?
 
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Space is nowhere a perfect vacuum. Even the voids between galaxy clusters contain several protons per cubic metre. That's enough to assign a temperature. 100,000K is common.
 
Oh - didnt know that. What exactly is in space?
 
Thank you
 

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