Alpha Regio

Alpha Regio

. This Magellan image mosaic reveals the radar-bright, highly fractured southeastern portion of Alpha Regio (left), forming an intricate pattern of ridges and valleys. The complexly deformed, high-standing terranis are called tesserae. The image, which is approximately 600 thousand meters across, also shows dark, smooth volcanic planes that border the eastern edge of Alpha Regio. Within these dark plains are eight rounded, pancake domes up to 35 thousand meters across and up to 1 thousand meters high (right center and bottom right). Alpha is the first letter of the Greek alphabet. (Courtesy of NASA.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University