From left: ESA astronauts Matthias Maurer, Pedro Duque and Luca Parmitano on a field trip for the Pangaea geological training course.
Astronauts have to train several hours per week to maintain their physical fitness.
On field trips in the Mars-like landscape of Lanzarote, one of the Spanish Canary Islands, the students were tasked with interpreting geological features to understand the history of how the island formed. The goal is to help astronauts choose the best places to explore and collect rock samples.