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	+ Home A space of your own. Get the NASA information that's important to you. + Registration / Log in		Sci-Fi or Science Fact? How much do you know about space travel and the search for extraterrestrial life? + Take the Quiz + Non-Flash Version Science Fiction vs. Science Fact How much do you know about space travel and the search for extraterrestrial life? + Take the Quiz + Non-Flash Version Science Fiction or Science Fact? None Planetary Geology Educator Guide Guide features exercises grouped into five units: introduction to geologic processes; impact cratering activities; planetary atmosphere; planetary surfaces; and geologic mapping. + View site Flash: Explore With Us + View this interactive feature The Swift Mission's Incredible Animations + Read More Opportunity to 'Back Out' of Crater + Read More + Drive the Rovers NASA's Expendable Launch Vehicle Missions Don't miss a single mission! Check here for the dates of upcoming rocket launches. + Read More + View Archives
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