Reassembled and ready, Solar Impulse 2 stands ready to leave Abu Dhabi on an historic around-the-world flight within the next month, according to the project’s latest announcements. When HB-SIB leaves Abu Dhabi, it will cross two oceans and four continents before returning to its departure point. The trip will include landings in 12 locations and a total distance of 35,000 kilometers (21,700 miles) – all without using a drop of fuel. Its route and schedule will be affected by weather, and since the airplane will fly at only 27 miles per hour at night to conserve battery energy, by prevailing winds. Normal flight speeds will range from 50 to 100 kilometers per hour (31 to 62 mph). The press release lists the landing sites: “Si2 will take-off from Abu Dhabi, capital of the United Arab Emirates, in late February or early March and return by late July or early August 2015. The route includes stops in Muscat, Oman; Ahmedabad and …