Since Mariner 9 took images of Martian river valleys in 1971, we have struggled to understand how they were formed. Mars is thought to have had a dense atmosphere with enough greenhouse gases to have maintained a balmy, wet climate. To date, no one has managed to construct a climate model to support this theory and the river valleys remain a mystery. Recently, a new idea has emerged suggesting that asteroid impacts may have led to the release of water from beneath Mars’ surface. This talk will explore how impacts could create rivers and Mars’ climate history.
Watch the Public Lecture: