What is the temperature of space?

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Offline Huxlly

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What is the temperature of space?
« on: 02/11/2009 11:13:48 »
What is the temperature of space?

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Offline Vern

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What is the temperature of space?
« Reply #1 on: 02/11/2009 11:16:42 »
I am not sure the idea of temperature applies to empty space. We normally think of temperature as the movement of molecules and their interaction with each other.

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Offline Mr. Scientist

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What is the temperature of space?
« Reply #2 on: 02/11/2009 11:27:42 »
Its very cold about: 2.71 K.
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Offline Soul Surfer

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What is the temperature of space?
« Reply #3 on: 03/11/2009 22:51:54 »
It is a bit complicated. Deep space a long way away from any galaxies probably has a temperature associated with the cosmic microwave background as Mr scientist implied bit there are a few atoms around and most of these are moving quite quickly and so they represent quite a high temperature.  Near the sun the electromagnetic and particle radiation from that  increases the background temperature as does the starlight from our galaxy.
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