Solar Impulse begins the long flight from China to Hawaii

Swiss pilot Andre Borschberg has taken off on the longest leg of Solar Impulse's round-the-world-flight. Andre will be in the air over the Pacific Ocean for well over five days. The experimental aircraft, which has a wingspan bigger than a jumbo but weighs little more than a large car, left Nanjing at 02:39 (18:39 GMT).

The journey is the seventh leg in the single-seat, propeller-driven aircraft's quest to circumnavigate the globe using just the energy of the Sun.