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Titan’s Dunes | Space Wallpaper

Cassini Captures Familiar Forms on Titan’s Dunes 1920
This cool space wallpaper is a radar image from the Cassini orbiter showing dark streaks carved into dunes on Saturn’s moon Titan. (Image credit: NASA/JPL-Caltech)

This cool space wallpaper is a radar image from the Cassini orbiter showing dark streaks carved into dunes on Saturn’s moon Titan. While sand on Earth is composed of silicates, the ‘sand’ of these alien dunes is formed from grains of organic materials about the same size as particles of our beach sand. The small size and smoothness of these grains means that the flowing lines carved into the dunes show up as dark to the human eye. This image was released March 27, 2014.

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Space.com Staff
Space.com Staff

Space.com is the premier source of space exploration, innovation and astronomy news, chronicling (and celebrating) humanity's ongoing expansion across the final frontier. Originally founded in 1999, Space.com is, and always has been, the passion of writers and editors who are space fans and also trained journalists. Our current news team consists of Editor-in-Chief Tariq Malik; Editor Hanneke Weitering, Senior Space Writer Mike Wall; Senior Writer Meghan Bartels; Senior Writer Chelsea Gohd, Senior Writer Tereza Pultarova and Staff Writer Alexander Cox, focusing on e-commerce. Senior Producer Steve Spaleta oversees our space videos, with Diana Whitcroft as our Social Media Editor.