Phil Christensen
Phil Christensen
Philip Russel Christensen is a geologist whose research interests focus on the composition, physical properties, processes, and morphology of planetary surfaces, with an emphasis on Mars and the Earth. He is currently a Regents' Professor and the Ed and Helen Korrick Professor of Geological Sciences at Arizona State University...
climate mars models orbit predict spin tilt
The climate models predict that as the orbit of Mars evolves, the tilt of its spin axis changes.
step studies time
The time has come to take Martian studies a step further?and deeper.