Solar Impulse is back in the air on the second leg of its historic attempt to fly around the world.After the briefest of lay-overs, the prop-driven plane took off from Muscat in Oman at 06.35 (02:35 GMT).It is heading across the Arabian Sea to Ahmedabad in India.Project chairman, Bertrand Piccard, is now at the controls, having taken over from Andre Borschberg, who flew the first leg on Monday from Abu Dhabi to Muscat.The second leg will cover about 1,465km (791 nautical miles), and should take about 16 hours. Live coverage of Tuesday’s leg is being relayed on the internet.It is expected to take five months in total for the single-seater Solar Impulse vehicle to cross the continents, passing over both the Pacific and Atlantic oceans in the process.
