In honor of a slew of new results coming from NASA's Curiosity rover, here's a two-minute simulation of our current best-bet for how the martian environment has evolved over the past 4 billion years. From temperate and wet to frigid desert. Credit: NASA's Goddard Space Flight Center Conceptual Image Lab.
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ABOUT THE AUTHOR(S)
Caleb A. Scharf
Dr. Caleb A. Scharf is Director of Astrobiology at Columbia University,and has an international reputation as a research astrophysicist, and asa lecturer to college and public audiences. The UK's Guardian newspaperhas listed his blog Life, Unbounded, as one of their "hottest scienceblogs," while an editor at Seed Magazine called it "phenomenal.Informed, fresh, and thoughtful." Scharf is author and co-author of morethan 100 scientific research articles in astronomy and astrophysics. Hiswork has been featured in publications such as New Scientist, ScientificAmerican, Science News, Cosmos Magazine, Physics Today, and National Geographic, as well as online at sites like Space.com and Physorg.com. His textbook for undergraduate and graduate students, Extrasolar Planets and Astrobiology, won the 2012 Chambliss Prize of the AAS. His articles and reviews have appeared in such prestigious publications as Science, Nature, The Astrophysical Journal, and Monthly Notices of the Royal Astronomical Society. Dr. Scharf is a regular keynote speaker at academic meetings, such as for the American Physical Society, museums, and both public and private venues, including the American Museum of Natural History and the Rubin Museum of Art in New York. He has been a guest on Krulwich on Science at NPR, William Shatner's "Weird or What?" and has served as a consultantt o editors and producers at National Geographic Magazine, The Science Channel, The Discovery Channel, and The New York Times.