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Questions tagged [spectroscopy]

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4 votes
1 answer
183 views

What instruments and techniques measured Mars' atmospheric D/H ratio which suggests (all of) it's water didn't evaporate after all?

The Time article Mars Has Much More Water Than Previously Known—But There's a Catch says: The greater weight of deuterium causes it to behave differently in the Martian atmosphere. While free ...
uhoh's user avatar
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23 votes
2 answers
3k views

How does steel deteriorate in translunar space?

To confirm the identity of a 1966 Centaur booster returning near earth in 2020, NASA took some spectroscopy observations. They didn't match those of the same metal (301 stainless steel) on earth, ...
Camille Goudeseune's user avatar
16 votes
1 answer
2k views

Why wasn't the phosphine in Venus' atmosphere detected by space probes?

Today, it was announced that phosphine has been found in Venus' atmosphere, rekindling the discussion about the possibility of extraterrestrial life. Venus has been visited by space probes for about ...
Glorfindel's user avatar
3 votes
1 answer
102 views

'Noodle' zigzagging of a mapping spectrometer

During Cassini's "T16" 16th flyby of Titan on 2006 July 22, its mapping spectrometer for the first time utilized the 'noodle' technique of taking long, zigzagging spectra instead of single ...
Camille Goudeseune's user avatar
3 votes
1 answer
264 views

Where to get Cassini VIMS data and optical transmission spectra of Titan's atmosphere?

In the extensive 2010 paper HYDROCARBON DEPOSITS ON TITAN by Clark et al. there are two plots that show Titan's atmospheric transmission windows. These plots (Figures 1 and 5) can be used to indicate ...
Don_S's user avatar
  • 379
4 votes
2 answers
220 views

What is the process to produce a chemical composition spectrum of a celestial body?

I have come across this spectrum, which depicts the chemical composition of Titan's atmosphere: Taken from here. I would like to know how do scientists generate such spectra, starting with capturing ...
Don_S's user avatar
  • 379
6 votes
1 answer
574 views

What type of information can be gathered from a plot of brightness against wavelength?

While reading this paper about the possibilities JWST will provide to study Titan, I have come across a graph that plots brightness (not sure what units it is in) against wavelength in micron. Here it ...
Don_S's user avatar
  • 379
1 vote
1 answer
71 views

Recommended source for familiarizing oneself with the applications of spectroscopy in planetary science

I have recently entered the field of planetary science as a limited-scope project which is part of my masters' degree in chemistry. My project is going to revolve around Titan and its complex organic ...
Don_S's user avatar
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