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Desktop Wallpaper: NASA concept art

Sunset on Enceladus

In this artist's rendering, a distant sun forms a halo (refracted sunlight by ice crystals) amid streamers of pure water ice particles, which spew into space from cracks in the south polar surface of Saturn's tiny moon Enceladus.

Image by Karl Kofoed -- Drexel Hill, Pennsylvania



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.