After Hours

Desktop Wallpaper: NASA concept art

Telescope in orbit

This artist's rendering represents a concept of possible activities during future space exploration missions. It depicts astronauts working in chorus with robots to assemble a telescope in orbit.



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.