Mariner reveals Mars

The unmanned Mariner missions gradually revealed Mars's extreme landforms. Perhaps most impressive was Olympus Mons, a volcano three times the size of Mount Everest.

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5 minutes


Role Contributor
NarratorMark Halliley
NarratorZam Baring
Series ProducerDavid McNab
ProducerJames Younger
ProducerJacqueline Smith
ProducerBecky Jones
ProducerTeresa Hunt

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