My first Magazine Sky & Telescope - 02.2019 | Page 29

SURFACE FEATURES GALORE Titan has an active surface with dunes, lakes, and even (potentially) cryovolcanoes. Shown clockwise from top right are a colorized version of the pebbled surface Huygens landed on; a 3D radar map of Doom Mons (tallest peak) and its nearby pit Sotra Patera (vertical height exag- gerated by a factor of 10); a slice of the dunes of Shangri-la; Ligeia Mare and its channel systems in false color; and a global image combin- ing infrared and visible-light data to reveal the surface: Dark areas at the north pole are seas and lakes, whereas dark regions at the equator are dunes. View from the surface Channels, lakes, and seas Cryovolcano? Dunes sk yandtele scope.com • FE B RUA RY 2 019 27