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...
step studies time
The time has come to take Martian studies a step further?and deeper.
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.