Instructional Video1:40
NASA

Apollo Moon Soil Radiation Experiment

3rd - 11th
When a stream of charged particles known as the solar wind careens into the Moon’s surface at nearly 280 miles per second (450 kilometers per second), it enriches it in ingredients that could make water....
Instructional Video1:34
Science360

Engineering the spark that starts wildfires

12th - Higher Ed
Hot metal fragments can be created from power lines, overheated brakes, railway tracks, or any other manner of metal-on-metal action in our industrialized society.



The particles can...