Terra Cognita
Terra Cognita Pushing back the frontiers of the unknown. On the left: destinations in the Solar System as seen by historic robotic spacecraft and telescopes. On the right: the same worlds as seen by recent missions that have filled in some of the blank spaces on the map. Click the image for the full-size version. NASA / JPL-Caltech / SSI / Johns Hopkins University Applied Physics Lab / Space Telescope Science Institute / Southwest Research Institute / GSFC / Arizona State University / Malin Space Science Systems / Moscow State University of Geodesy and Cartography (MIIGAiK) / Processing by Val Klavans / Montage by Bill Dunford

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