Venus's weird terrain

May 1991
U.S. News & World Report;5/13/91, Vol. 110 Issue 18, p67
Pictures a three-dimensional view of the Ishtar Terra highland in the northern hemisphere of Venus made from Magellan's mapping. Magellan's radar beam shows a planet four fifths covered by vast uninterrupted plains, the rest by large but undramatic highland regions; Plains formed by enormous floods of lava, some so fluid and flowing so rapidly as to cut channels and form stream beds; `Pancake domes,' `squashed ticks,' scalloped `legs,' and coronae.


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