Latest Solar panels on spacecraft Stories
By Grose, Thomas K AERONAUTICS Planes that employ solar energy have been around since the 1970s. But Swiss scientist and pilot Bertrand Piccard is developing a sun-powered plane that's truly revolutionary.
Word of the Day
- A small wooded valley; a dell.
- The protecting weather-shed built around the entrance to a house.
The word 'dingle' comes from Middle English dell, hollow.
More Images (6 images) »