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Astronomie

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Evidence for Flowing Water on Mars Grows Stronger. THE WOODLANDS, Tex.

Evidence for Flowing Water on Mars Grows Stronger

—Today's Mars is a frigid desert, a place where water—the key to life as we know it—has gone into hiding. Whatever water may have once existed on Mars in rivers, lakes or even oceans is now frozen into ice caps, locked up in hydrated minerals or buried in debris-coated glaciers. ChronoZoom. ChronoZoom is an educational tool for teachers and students who want to put historical events in perspective.

ChronoZoom

A great many resources have been created already in ChronoZoom for your enjoyment and enlightenment. Start Exploring. What a trip through a wormhole would look like. Lees_sun.jpg (940×598) NASA Video Traces Moon’s Evolution Over 4.5 Billion Years. Classroom Lessons.