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View all articles for this topic.  Bridging the Gap: Part III Renowned physicist, Freeman Dyson, has proposed some of the most compelling concepts for space explorations. These range from a theory of life's origins--the "double-origin hypothesis"--which posits two separate creatures at the beginning, one replicating and the other metabolizing. He also proposed the "Dyson Sphere", an energy collector on a planetary scale. In this final installation of his three-part interview, Dyson joins Planetary Society Chairman, Bruce Murray, and Executive Director, Louis Friedman, for an informal discussion about interstellar flight. Full story...     Saturday, August 23, 2003  Europa Diary I: Landing on Alien Terrain The Europa Focus Group, a collaboration of scientists who study Jupiter's ice-covered moon, met recently on Alaska's North Slope. By studying the unique terrain at the edge of the Arctic Ocean, they foreshadow future expeditions to search for life on Europa. Full story...     Wednesday, July 23, 2003  Life Pinned on Viking Horns? The 1976 Viking mission sampled the strongly rusting soil on Mars. Retrospectively, its three biology experiments give insight into the challenges of working remotely, where one can never have too much data for further analysis. Full story...     Thursday, July 10, 2003  Odyssey Finds Large Concentrations of Water on Mars The first results from the Mars Odyssey are in, and they reveal that the Southern Hemisphere of the Red Planet has a lot of water ice just below the surface. Full story...     Tuesday, June 17, 2003  Simulating a Martian Colony in the Arctic Once again, an island in the Canadian high arctic, a polar desert of a world, will serve this summer as a little bit of Mars on Earth. Full story...     Sunday, June 15, 2003  Breeding Computer Code When biologists and computer scientists meet, their hybrid projects have produced intriguing models for evolution. A team of Michigan State and Caltech scientists report in Nature on their method of breeding computer code to mimic some features of evolutionary theory. Their findings are consistent with a mutation principle where 'one-step backward, two-steps forward' can advance towards a better result. Full story...     Monday, June 02, 2003

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