Image: Titan atmosphere diagram

Description: This figure shows a mass spectrum of Titan's ionosphere near 1200 kilometers (750 miles) above its surface. The mass range covered goes from hydrogen at 1 dalton to 99 daltons per elementary charge. This mass range includes compounds with 1, 2, 3, 4, 5, 6, and 7 carbons as the base structure (as indicated in the figure label). The identified compounds include multiple carbon molecules and carbon-nitrogen-bearing species as well.
Title: Titan atmosphere diagram
Credit: http://photojournal.jpl.nasa.gov/catalog/PIA07865 This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: inverted colors, cropped, cleaned.  
Author: NASA/JPL/University of Michigan
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License: Public domain
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