The Red Album

Mars’ foremost photographers pick their favorite images of their favorite planet.

Ius Chasma

(Malin Space Science Systems/ NASA)

Another "Eureka" moment came in October 1997—before the Mars Global Surveyor began its primary mission—when the MOC returned pictures of a part of Valles Marineris known as Tithonium Chasma/ Ius Chasma. Light and dark layers in the rock outcrops of the canyon walls were a surprise—no one had expected such layering throughout almost the entire depth of the canyon.

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