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The thermosphere is 50 miles long o rly??? <spy guns like yeah!!!!!! == Feeling warm? its going to be great come down now to tunza fun!!! NOW! my frige is broken help meh

The phrase "Even though the temperature is so high, one would not feel warm in the thermosphere, because it is so near vacuum that there is not enough contact with the few atoms of gas to transfer much heat." should be improved or removed alltogether. The style is very unprecise ("so high", "so near vacuum", etc) and talking about a human "feeling warm" in such an environement would imply you answer 'how' would a person get in contact with such media. Temperature has a clear physical definition, "feeling temperature" not. See also my comment's_atmosphere#Temperature_and_layers:_temperature_feeling.3F in the discussion page of the Earth's atmosphere article.

Aog2000a (talk) 23:23, 9 May 2009 (UTC)

Why don't you explain how the temperature is determined instead of removing information that appears to be correct? The article says that a regular thermometers will show a temperature below freezing, perhaps you can explain this better. Q Science (talk) 08:06, 11 May 2009 (UTC)


This article states the thermosphere is the largest part of earth atmosphere without a source... I'm pretty sure the exosphere is the largest. I'd like a confirmation on that. --GreenLineMan (talk) 01:16, 28 September 2010 (UTC)

I agree; it makes no sense that it's the "Biggest", as its thickness from lowest altitude to highest is only a fraction of the thickness of the exophere, its circumference at its outer limit is smaller than the circumference of the exophere, its mass is less than that of the troposphere, in fact I can't think of any way of measuring it that would lead one to conclude that it's the "biggest" zone. Perhaps my thinking is flawed though, and if that's the case, the statement that this is the biggest atmospheric zone really needs further explanation, or at least a link to a source confirming the assertion. (talk) 10:18, 19 February 2011 (UTC)

Highest Temperature Contradiction[edit]

In the first section of this article there is a contradiction regarding the high temperatures of this stratum. There are no specific sources listed, and I don't know which claim is correct. "Temperatures are highly dependent on solar activity, and can rise to 1,500 °C (2,730 °F)... The highly diluted gas in this layer can reach 2,500 °C (4,530 °F) during the day."

Incidentally, the article also states that thermometers don't work in this area, "due to the energy lost by thermal radiation overtaking the energy acquired from the atmospheric gas by direct contact." Maybe that accounts for the problem. Haha. — Preceding unsigned comment added by Spoke9 (talkcontribs) 05:03, 11 June 2011 (UTC)

Thermosphere and ionosphere[edit]

What is the difference between these two. I think they are the same and ionosphere is the more common term. If so these two articles should be merged. Thoughts? Aarghdvaark (talk) 04:47, 2 May 2012 (UTC)

Answer: The thermosphere consists essentially of neutral gas particles. These are partly ionized by solar XUV-radiation. This ionized part is the ionosphere which is thus a subsection of the thermosphere.Bnland 12:08, 25 August 2012 (UTC) — Preceding unsigned comment added by Bnland (talkcontribs)