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Four years after the launch of the first Landsat satellite (then called the Earth Resources Technology Satellite, ERTS-1), a U.S. Geological Survey Professional Paper entitled, "ERTS-1 A New Window on Our Planet" was published. The publication documented how visual examination of images from a space-based vantage point could benefit disciplines such as geology, hydrology, forestry, geography, cartography, agriculture, land use planning and rangeland management.

Thirty years after the publication of that professional paper, spectral data recorded by the Landsat satellites have served as the long-dominant source of imagery in the field of remote sensing. But here, we offer three galleries of Landsat imagery for you to visually examine. Enjoy.