Solar-Powered Planes Toughest Crossing

Solar-Powered Planes Toughest CrossingSolar-Powered Planes Toughest Crossing

A solar-powered plane took off from Japan on Monday on the seventh leg of its journey round the world, a trans-Pacific crossing expected to be the toughest part of the trip. If the pilot succeeds, it will be the longest-duration solo flight in aviation history, as well as the furthest distance flown by a craft that is powered only by the Sun, BBC reported.