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William K. Hartmann
William K. Hartmann, first winner of the Carl Sagan Medal, is the author of the novel Mars Underground and many highly regarded popular and academic scientific works; his photo-ess...lihat lebih banyakWilliam K. Hartmann, first winner of the Carl Sagan Medal, is the author of the novel Mars Underground and many highly regarded popular and academic scientific works; his photo-essay book, Desert Heart, is a hauntingly beautiful testament to the Southwest he loves. A planetary scientist, he lives in Tucson, Arizona.lihat lebih sedikit