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Fundamentals of Remote Sensing |
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5.2 Whiz QuizCrop Circles Seen from Space! Every spring seems to bring a resurgence of the mysterious crop circles seen in farmers' fields around the world, often attributed to the work of aliens. Finally, these crop circles have been observed by a remote sensing device! Landsat TM captured this view while over southern Alberta. Look at the green circles on the image - how could they have been caused, other than by alien activity? |
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