Venus - life?

mickthechippy

space cadet
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I often wonder about this sorta thing

how a telescope is used to detect gases on another planet

how do they know what a gas or element looks like across the vastness of space and if that gas that they confirm as the same gas that produces that result on earth is actually the same gas in a totally alien environment
 

muskrat

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They know because of the "spectral signature":
Spectral signature is the variation of reflectance or emittance of a material with respect to wavelengths (i.e., reflectance/emittance as a function of wavelength). The spectral signature of stars indicates the composition of the stellar atmosphere.
 

rudd

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They know because of the "spectral signature":
Same way they find exo planets that humans may one day inhabit - of course we need to completely &£% this one up first!
 

rudd

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I often wonder about this sorta thing

how a telescope is used to detect gases on another planet

how do they know what a gas or element looks like across the vastness of space and if that gas that they confirm as the same gas that produces that result on earth is actually the same gas in a totally alien environment
Mathematics, physics, music and chemistry are universal 😉
 

Scribe

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Venus with blue genes ?
 

kevin o connor

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This is the same gas that is in a human fart ! I often wondered where it all went. Hundreds of thousands of years of farts have to go somewhere !
 
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