NASA / SCIENCE PHOTO LIBRARY NASA / SCIENCE PHOTO LIBRARY
False-colour radar map of the southern hemisphere of Venus. The prime meridian of Venus (0 degrees longitude) is oriented toward the top of the frame. Notable features include the bright, circular Artemi Chasma canyon at bottom right, with the bright southern edge of the continent of Aphrodite Terra extending to bottom centre. The bright patch at top centre is the upland Alpha Regio region. The data for this image were gathered by the Magellan radar-mapping spacecraft. Areas of missing Magellan data have been filled in by lower-resolution Pioneer-Venus data and a mid- tone or black where no data are available. The colour was suggested by Soviet photographic data.
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