Proxima Centauri b Proxima Centauri b Proxima Centauri b (also called Proxima b or Alpha Centauri Cb) is an exoplanet orbiting in the habitable zone of the red dwarf star Proxima Centauri, which is the closest star to the Sun and part of a triple star system. It is located about 4.2 light-years (1.3 parsecs, 40 trillion km, or 25 trillion miles) from Earth in the constellation of Centaurus, making it the closest known exoplanet to the Solar System. Proxima Centauri b orbits the star at a distance of roughly with an orbital period of approximately 11.2 Earth days, and has an estimated
Two miles Kenyan Daniel Komen in Hechtel, Belgium on 19 July 1997. The women's record is 8:58.58, set by Ethiopian Meseret Defar in Brussels, Belgium on 14 September 2007. Note: this list only covers boys because the history of 2 mile running largely occurred before Title IX, before high school girls were allowed to compete, which occurred about the same time as conversion to metric distances. Two miles The 2 mile (10,560 feet or exactly 3,218.688 metres) is a historic running distance. Like the mile run, it is still contested at some invitational meets, perhaps because it provides an easier record to