Alfred McEwen is an American professor of planetary geology at the University of Arizona. McEwen is a member of the Lunar and Planetary Laboratory where he is the director of the Planetary Image Research Laboratory. He was a member of the imaging science team on the Cassini–Huygens mission to Saturn, co-investigator on the Lunar Reconnaissance Orbit Camera team, and principal investigator of the High Resolution Imaging Science Experiment (HiRISE) aboard the Mars Reconnaissance Orbiter.
He earned a Ph.D. in Planetary Geology in 1988 from Arizona State University.
McEwen participated in the Mars Odyssey, Mars Global Surveyor, and Galileo spacecraft missions.
In 2015, McEwen received the Whipple Award for his work on HiRISE. In 2019, he received the G. K. Gilbert Award.
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Scientific American often changes the title of a print article when it is published online. This article is titled "The Long and Arduous Quest to Find Flowing Water on Mars May Be Over" online.
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