Bytesize Science: New technology: tiny spaceships

Imagine spaceships the size of a birthday cake zooming through the solar system. They snap pictures of other planets and send the images back to scientists on Earth. Some work as communications satellites. They relay TV programs, text messages, telephone signals and the Internet. Some may even be spy satellites with cameras powerful enough to snap peoples photos from hundreds of miles up in the sky. Now, one scientist has made a discovery that may make that sci-fi vision come true.