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<blockquote data-quote="Umbran" data-source="post: 9640067" data-attributes="member: 177">Not a great assumption.&nbsp; When you point a telescope at another planet over a hundred light years away, it isn't like you get a clear and full accounting of everything in that atmosphere.&nbsp; Mostly, you get starlight.&nbsp; And there's some very small variation in it from the atmosphere absorbing some light.&nbsp; And that data has a lot of noise in it.&nbsp; They happened to be able to peel out of all that some data that strongly suggests the presence of these particular molecules.That DOES NOT mean there aren't other things present.&nbsp; No.&nbsp; The sun, at a surface temperature of 5778 Kelvin produces &quot;daylight&quot; outside, right?&nbsp; It is the standard for &quot;white light&quot; to our eyes, since we were born under it.&nbsp; A candle, at a temperature of around 1900 Kelvin, produces light that to our eyes looks yellow, maybe a bit orangey, but not red.The star we are talking about has a surface temp of 3457 Kelvin, between the temp of the candle and the sun.&nbsp; It is also the effective temperature of... most indoor lighting!&nbsp; &quot;Warm whilte&quot; light bulbs produce like as if they were up to 3000 Kelvin.&nbsp; &quot;Natural white&quot; light bulbs are more like 4000 K.&nbsp; So, this star is between those.&nbsp; [ATTACH=full]402718[/ATTACH]</blockquote>

[QUOTE="Umbran, post: 9640067, member: 177"] Not a great assumption. When you point a telescope at another planet over a hundred light years away, it isn't like you get a clear and full accounting of everything in that atmosphere. Mostly, you get starlight. And there's some very small variation in it from the atmosphere absorbing some light. And that data has a lot of noise in it. They happened to be able to peel out of all that some data that strongly suggests the presence of these particular molecules. That [I]DOES NOT[/I] mean there aren't other things present. No. The sun, at a surface temperature of 5778 Kelvin produces "daylight" outside, right? It is the standard for "white light" to our eyes, since we were born under it. A candle, at a temperature of around 1900 Kelvin, produces light that to our eyes looks yellow, maybe a bit orangey, but not red. The star we are talking about has a surface temp of 3457 Kelvin, between the temp of the candle and the sun. It is also the effective temperature of... most indoor lighting! "Warm whilte" light bulbs produce like as if they were up to 3000 Kelvin. "Natural white" light bulbs are more like 4000 K. So, this star is between those. [ATTACH type="full" size="1008x421"]402718[/ATTACH] [/QUOTE]

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