The Composition and Chemistry of Titan's Atmosphere
Overview
Authors
Affiliations
In this review I summarize the current state of knowledge about the composition of Titan's atmosphere and our current understanding of the suggested chemistry that leads to that observed composition. I begin with our present knowledge of the atmospheric composition, garnered from a variety of measurements including -, the , and other ground- and space-based telescopes. This review focuses on the typical vertical profiles of gases at low latitudes rather than global and temporal variations. The main body of the review presents a chemical description of how complex molecules are believed to arise from simpler species, considering all known "stable" molecules-those that have been uniquely identified in the neutral atmosphere. The last section of the review is devoted to the gaps in our present knowledge of Titan's chemical composition and how further work may fill those gaps.
Formation and Stability of the Propionitrile:Acetylene Co-Crystal Under Titan-Relevant Conditions.
Czaplinski E, Vu T, Maynard-Casely H, Ennis C, Cable M, Malaska M ACS Earth Space Chem. 2025; 9(2):253-264.
PMID: 40008142 PMC: 11849028. DOI: 10.1021/acsearthspacechem.4c00262.
Single-Crystal Elasticity of α-Hydroquinone-An Analogue for Organic Planetary Materials.
Zhang J, Zhou W, Vu T, Hodyss R, Yu X ACS Earth Space Chem. 2025; 9(1):1-7.
PMID: 39839372 PMC: 11744926. DOI: 10.1021/acsearthspacechem.4c00322.
Farnsworth K, McLain H, Chung A, Trainer M ACS Earth Space Chem. 2024; 8(12):2380-2392.
PMID: 39720226 PMC: 11664644. DOI: 10.1021/acsearthspacechem.4c00114.
Noncovalent Interactions Steer the Formation of Polycyclic Aromatic Hydrocarbons.
Rap D, Schrauwen J, Redlich B, Brunken S J Am Chem Soc. 2024; 146(33):23022-23033.
PMID: 39110663 PMC: 11345775. DOI: 10.1021/jacs.4c03395.