Ronald Greeley was an American geologist and a prominent figure in planetary science, particularly known for his work on planetary surface processes and Mars geology. He contributed to the understanding of the geology of Mars through satellite imagery and studies of Martian surface features. Greeley was involved in several NASA missions and projects related to planetary exploration. In recognition of his contributions to the field, he has been honored posthumously in various ways, including having a feature on Mars named after him.
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