Take the pilots out and solar-powered aircraft get really exciting
The prospect of autonomous, pilotless aircraft with limitless range presents all sorts of opportunities and possibilities for the future
Solar Impulse plane lands after 21-hour flight
The Solar Impulse, a single-person solar-powered aircraft piloted by a Swiss adventurer, landed after 21-hour transcontinental flight
Solar-powered plane makes night flight in aviation "milestone"
A solar-powered airplane landed after a flight that included several hours in the air after sundown