Scientists in Germany are testing what they describe as "the world's largest artificial sun," which they hope could pave the way toward creating hydrogen to use as a green fuel.

The system called Synlight — being developed at the German Aerospace Center near Cologne — is an array of 149 bright film projector spotlights. They produce light about 10,000 times stronger than typical sunlight.

The test aims to find new ways to create hydrogen to fuel vehicles such as cars and planes, explained Bernhard Hoffschmidt, the director of the Center's Institute for Solar Research.