John E. MooresAssociate professor at York UniversityJohn E. Moores is a planetary scientist, author and an associate professor at York University in the Centre for Research in Earth and Space Science. 'Lost in insignificance': Here's what it's like to rappel into the solar system's largest canyon "You wanted this moment to belong just to yourself and the landscape: sunset on the rim of Valles Marineris, the largest canyon in the solar system."
