Solar-Powered Plane Flies 24 Hours, Right Through the Night

We've talked about the remarkable Solar Impulse aircraft before--it's a mind-boggling vehicle that's important for the future of flight and solar-powered product design. It just flew its first 24-hour non-stop flight, right through the night. 

Considering that Solar Impulse only took its very first test flight back in April, the fact it's successfully flown under solar power through the day, and stored battery power through the night for a non-stop day-long mission is almost incredible. It's...