Rifts in the Valles Marineris may have been created by this substance, which Opportunity found near Endeavor Crater.
Material found in "Dodo" and "Goldilocks" confirmed the existence of this substance, which is suggested by prominent "blue berries." This substance was proposed as the reason that chunks of bright material disappeared from Phoenix's arm. A mistranslation of Giovanni Schiaparelli convinced 19th century scientists that canali actually contained this. Rifts in the Valles Marineris may have been created by this substance, which Opportunity found near Endeavor Crater. Fluvial conglomerates discovered by Curiosity indicate that this substance once existed far from the poles. For 10 points, name this substance which would indicate that life could exist on the Red Planet.
Material found in "Dodo" and "Goldilocks" confirmed the existence of this substance, which is suggested by prominent "blue berries.
water on Mars [or Martian water; or ice on Mars; or H2O]