The ablation of phosphorus from interplanetary dust particles entering the Earth's atmosphere is a potentially significant source this key bioelement. In study, atmospheric chemistry explored by developing reaction network possible routes PO, major product in upper mesosphere/lower thermosphere region, to stable reservoirs H3PO3 and H3PO4 that become incorporated into meteoric smoke (MSPs) as m...

We construct Saturn equatorial neutral temperature and density profiles of H, H$_2$, He, CH$_4$, between 10$^{-12}$ 1 bar using measurements from Cassini's Ion Neutral Mass Spectrometer (INMS) taken during the spacecraft's final plunge into Saturn's atmosphere on 15 September 2017, combined with previous deeper atmospheric Cassini Composite InfraRed (CIRS) UltraViolet Imaging Spectrograph (UVIS...