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NASA's Mars Trek is Google Earth for the red planet
Yes, Google Earth and Street View are great for impromptu armchair traveling. But if you prefer taking a virtual jaunt somewhere literally out of this world, you might want to visit NASA's Mars Trek website instead. It's exactly what its name makes it sound like: an interactive map of the red planet's surface made out of images taken by several missions, which you can explore in either 2D or 3D. You won't see close-up views of its craters and volcanoes, of course, but it does allow you to zoom in and change views (global, north polar and south polar).
