After Hours

Desktop Wallpaper: NASA concept art

Odyssey Detecting Ice

This artist's rendering portrays ice-rich layers in the soils of Mars being detected by instruments aboard NASA's 2001 Mars Odyssey spacecraft.



Mark W. Kaelin has been writing and editing stories about the IT industry, gadgets, finance, accounting, and tech-life for more than 25 years. Most recently, he has been a regular contributor to,, and TechRepublic.