[1] He specializes in using remote sensing and spectroscopy technology to examine and analyze planetary bodies.

[2] Mustard investigates the formation and evolution of rocky planets such as Mars, Mercury, the Moon and the Earth.

[1] Mustard was initially fascinated with the work of marine biologists such as Jacques Cousteau, but he chose to study in earth sciences.

[2] Shortly thereafter he became an assistant professor of research until joining regular faculty.

[5] He is currently Co-Director along with Barbara Sherwood Lollar (University of Toronto) of the Earth 4D program of the Canadian Institute for Advanced Research (CIFAR) and the Deputy Principal Investigator of the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) on the NASA Mars Reconnaissance Orbiter [6][3] • Earth Observer 1 (Science Team Member)[7] • OMEGA: Observatoire pour la Minéralogie, l’Eau, les Glaces et l’Activité (science collaborator)[8] • CRISM: Compact Reconnaissance Imaging Spectrometer for Mars (Deputy Principal Investigator)[9] • M3: Moon Mineralogy Mapper (Science Team Member)[9] • Elected as a Fellow of the American Association for the Advancement of Science 2011[4] • Awarded the NASA Medal for Exceptional Public Service 2012[4] • Elected fellow of the American Geophysical Union 2014[4]