Poles hint at past climate on Mars PhysicsWeb

Astronomers have found the first direct evidence that the structure of the polar caps on Mars is linked to climate changes driven by fluctuations in the planet’s motion. A team led by Jacques Laskar of the CNRS Institute of Celestial Mechanics in France established the link by inspecting new high-resolution images. The researchers believe that the polar caps could reveal as much about the history of Mars as the terrestrial ice caps have told us about the history of the Earth (J Laskar et al 2002 Nature 419 375).