Hamish C.F.C. Hay

PS Planetary and Solar System Sciences

The 2026 Division Outstanding Early Career Scientist Award is awarded to Hamish C.F.C. Hay for pioneering work on tidal dissipation and ocean–ice coupling in icy moons, advancing our understanding of internal heating, ocean dynamics, and the habitability of ocean worlds.

Hamish C.F.C. Hay receives the 2026 Planetary and Solar System Sciences Division Outstanding Early Career Scientist Award for significant contributions to the study of the internal processes of icy moons and other planetary bodies. His research explores how heat is generated and redistributed beneath the surfaces of these distant worlds, with implications for their geological activity and potential habitability. Hay has developed theoretical models that help explain how tidal forces and internal oceans interact in moons with icy outer layers. He demonstrated that gravitational interactions between moons, rather than with their parent planet alone, can produce substantial internal heating. This finding has contributed to a broader understanding of energy sources within planetary systems, including those beyond our solar system.

Another important aspect of his work involves modelling how ocean and ice properties affect the tidal response of these moons. These insights help interpret surface changes and inform future observations by spacecraft exploring these environments. Hay’s approach combines physical theory with numerical simulations, offering practical models for complex planetary processes. His work stands out for its clarity and usefulness across a range of scientific applications.

In addition to his research, Hay has contributed to the scientific community through mentoring and collaboration. He has supported other Early Career Scientists and promoted inclusive practices within research teams. His involvement in international mission science teams has further broadened the impact of his work.

Hay’s research helps link internal planetary processes to surface features and observations, supporting a deeper understanding of the structure and evolution of icy moons. His contributions are valuable to ongoing and future efforts to explore the outer solar system and to assess the potential for habitable conditions beyond Earth.