Laboratory studies on the irradiation of methane in interstellar, cometary, and solar system ices

Published in The Astrophysical Journal

Formation of Giant Planets

A gas-poor planetesimal capture model for the formation of giant planet satellite systems

Published in Icarus

Deuteration effects on the structure and Infrared spectrum of CH5+

Published in Journal of the American Chemical Society

Sulfates on Mars: Indicators of Aqueous Processes

Recent analyses by MER instruments at Meridiani Planum and Gusev crater and the OMEGA instrument on Mars Express have provided detailed information about the presence of sulfates on Mars [1, 2, 3]. We are evaluating these recent data in an integrated multi-disciplinary study of visible-near-infrared, mid-IR and Mossbauer spectra of several sulfate ...

Jupiter’s obliquity and a long-lived circumplanetary disk

Published in Icarus

Meteor Showers and their Parent Comets

ROCK AND SOIL PHYSICAL PROPERTIES AT THE MER GUSEV CRATER AND MERIDIANI PLANUM LANDING SITES

Following the successful landings of both Mars Exploration Rover (MER) vehicles at Gusev Crater and Meridiani Planum, respectively, their Athena suite of instruments is being used to study the geologic history of these two very different landing sites on Mars that had been selected on the basis of showing different types of evidence for aqueous pro...

Gullies on Mars: Fresh gullies in dirty snow, Devon Island, High Arctic, as end-member analogs

Published in Lunar Planet. Sci. Conf. XXXVII

Hydrothermal alteration at the Panorama Formation, North Pole Dome, Pilbara Craton, Western Australia

Published in Precambrian Research Available