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Storms and the Depletion of Ammonia in Jupiter: II. Explaining the Juno Observations
Tristan Guillot, Cheng Li, Scott Bolton +8
Observations of Jupiter's deep atmosphere by the Juno spacecraft have revealed several puzzling facts: The concentration of ammonia is variable down to pressures of tens of bars, a…
Bayesian analysis of Juno/JIRAM's NIR observations of Europa
Ishan Mishra, Nikole Lewis, Jonathan Lunine +4
Juno spacecraft's spectrometer JIRAM recently observed the moon Europa in the 2-5 μm wavelength region. Here we present analysis of the average spectrum of a set of observations ne…
The water abundance in Jupiter's equatorial zone
Cheng Li, Andrew Ingersoll, Scott Bolton +20
Oxygen is the most common element after hydrogen and helium in Jupiter's atmosphere, and may have been the primary condensable (as water ice) in the protoplanetary disk. Prior to t…
Oxidation Processes Diversify the Metabolic Menu on Enceladus
Christine Ray, Christopher R. Glein, J. Hunter Waite +5
The Cassini mission to the Saturn system discovered a plume of ice grains and water vapor erupting from cracks on the icy surface of the satellite Enceladus. This moon has a global…
Hypothesis Perspectives: Might active volcanisms today contribute to the presence of phosphine in Venus's atmosphere?
Ngoc Truong, Jonathan I. Lunine
We propose an abiotic geological mechanism that accounts for the abundance of phosphine detected by Greaves et al., 2020. We hypothesize that trace amounts of phosphides formed in…
The Saturn Ring Skimmer Mission Concept: The next step to explore Saturn's rings, atmosphere, interior, and inner magnetosphere
Matthew S. Tiscareno, Mar Vaquero, Matthew M. Hedman +21
The innovative Saturn Ring Skimmer mission concept enables a wide range of investigations that address fundamental questions about Saturn and its rings, as well as giant planets an…