Simon Hanmer

The Solar System: A Geological Perspective on Current Controversies

Planetary scientists have made remarkable advances in understanding how our Solar System formed and evolved. Nonetheless, controversies have arisen between schools of thought that currently defy resolution. Here we focus on a personal selection of on-going debates pertaining to the rocky planets and Pluto, which require a geological perspective for their definition, evaluation and eventual solution.


Simon HanmerSimon Hanmer was a Senior Research Scientist at the Geological Survey of Canada for 30 years, until retirement in 2012. A field geologist steeped in structural geological theory, he investigated the micro- to mega-structural behaviour of the Earth’s crust during major deformation events across the Canadian Shield. He was an early  adopter of video cameras for astronomical observing.