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- Goddard Space Flight CenterUS884 papers
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14 papers · 2 filters
Distribution and habitability of (meta)stable brines on present-day Mars
Edgard G. Rivera-Valentín, Vincent F. Chevrier, Alejandro Soto +1
Special Regions on Mars are defined as environments able to host liquid water that meets certain temperature and water activity requirements that allow known terrestrial organisms…
Detection of Cyclopropenylidene on Titan with ALMA
Conor A. Nixon, Alexander E. Thelen, Martin A. Cordiner +7
We report the first detection on Titan of the small cyclic molecule cyclopropenylidene (c-C3H2) from high sensitivity spectroscopic observations made with the Atacama Large Millime…
Detection of CHCN in Titan's Atmosphere
A. E. Thelen, M. A. Cordiner, C. A. Nixon +6
Titan harbors a dense, organic-rich atmosphere primarily composed of N and CH, with lesser amounts of hydrocarbons and nitrogen-bearing species. As a result of high sensiti…
No evidence of phosphine in the atmosphere of Venus by independent analyses
Geronimo Villanueva, Martin Cordiner, Patrick Irwin +24
The detection of phosphine (PH3) in the atmosphere of Venus has been recently reported based on millimeter-wave radio observations (Greaves et al. 2020), and its re-analyses (Greav…
Tidal Dissipation in Dual-Body, Highly Eccentric, and Non-synchronously Rotating Systems: Applications to Pluto-Charon and the Exoplanet TRAPPIST-1e
Joe P. Renaud, Wade G. Henning, Prabal Saxena +4
Using the Andrade-derived Sundberg-Cooper rheology, we apply several improvements to the secular tidal evolution of TRAPPIST-1e and the early history of Pluto-Charon under the simp…
Unusually High CO Abundance of the First Active Interstellar Comet
M. A. Cordiner, S. N. Milam, N. Biver +12
Comets spend most of their lives at large distances from any star, during which time their interior compositions remain relatively unaltered. Cometary observations can therefore pr…