Because it is about the same size as Earth, Venus has often been called "Earth's twin." The Magellan spacecraft used radar to "see" through Venus's thick clouds and map its surface. Data were processed to generate detailed elevation maps of the planet such as the ones shown here.
Venus hemisphere centered
at 180° longitude.
! Click each thumbnail image to see a larger version.
Carefully examine each image to look for evidence of the surface processes at work on Venus. Decide for yourself whether you think Earth and Venus are twins.
5. What processes do you see evidence of
on the surface of Venus?