the right subclavian artery branches off the brachiocephalic artery. the left subclavian artery is the third branch off the aortic arch. the internal carotid arteries arise from the common carotid arteries and supply blood to the brain and orbits.
Airbus A340-500. The A340-500 is the world's second longest range airliner, allowing for a maximum distance of 16,670km (9,000nmi) with flight durations of up to 19 hours. The A340-500 took to the sky for its first flight in February 2002 and made its debut with Emirates in December 2003.
Bringing the enormous aircraft to fruition is not a done deal, but it's a good sign that the incredible build is under way. Once finished, the behemoth plane will have a 385-foot wingspan, making it the largest aircraft ever. It's not designed as a passenger plane, though. Backer Paul Allen (he of Microsoft fame) has bigger plans in mind: space launches.