David John Stevenson (born 2 September 1948) is a professor of planetary science at Caltech. Originally from New Zealand, he received his Ph.D. from Cornell University in physics, where he proposed a model for the interior of Jupiter. He is well known for applying fluid mechanics and magnetohydrodynamics to understand the internal structure and evolution of planets and moons. Research Summary Internal structure and evolution of both major and terrestrial planets; application of fluid dynamics and magnetohydrodynamics to planetary interiors; origin of the solar system.