LZ 127 Graf Zeppelin, which did so in 1929. Aviation records take account of the wind circulation patterns of the world; in particular the jet streams, which circulate in the northern and southern hemispheres without crossing the equator. There is therefore no requirement to cross the equator, or to pass through two antipodal points, in the course of setting a round-the-world aviation record. Thus, for example, Steve Fossett's global circumnavigation by balloon was entirely contained within the southern hemisphere. For powered aviation, the course of a round-the-world record must start and finish at the same point and cross all meridians; the course must be at least long (which is approximately the length of the Tropic of Cancer). The course must include set control points at latitudes outside the Arctic and Antarctic circles. In ballooning, which is at the mercy of the winds, the requirements are even more relaxed. The course must cross all meridians, and must include a set of checkpoints which are all outside of two circles, chosen by the pilot, having radii of and enclosing the poles (though not necessarily centred on them). Astronautics The first person to fly in space, Yuri Gagarin, also became the first person to complete an orbital spaceflight in the Vostok 1 spaceship within 2 hours in 1961. Flight started at 63° E and ended 45° E longitude; thus Gagarin did not circumnavigate Earth completely. Gherman Titov in the Vostok 2 was the first human to circumnavigate Earth in spaceflight and made 17.5 orbits. Human-powered According to adjudicating bodies Guinness World Records and Explorersweb, Jason Lewis completed the first human-powered circumnavigation of the globe on 6 October 2007. This was part of a thirteen-year journey entitled Expedition 360. In 2012, Turkish-born American adventurer Erden Eruç completed the first entirely solo human-powered circumnavigation, travelling by rowboat, sea kayak, foot and bicycle from 10 July 2007 to 21 July 2012, crossing the equator twice, passing over 12 antipodal points, and logging in 1,026 days of travel time, excluding breaks. National Geographic lists Colin Angus as being the first to complete a global circumnavigation. However, his journey did not cross the equator or hit the minimum of two antipodal points as stipulated by the rules of Guinness World Records and AdventureStats by Explorersweb. People have both bicycled and run around the world, but the oceans have had to be covered by air or sea travel, making