Light-year Light-year The light-year is a unit of length used to express astronomical distances and measures about 9.46 trillion kilometres or 5.88 trillion miles. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days). Because it includes the word "year", the term light-year is sometimes misinterpreted as a unit of time. The light-year is most often used when expressing distances to stars and other distances on a galactic scale, especially in nonspecialist and popular science publications. The unit most commonly used in professional astrometry is the parsec
Grimthorpe Handicap Chase Grimthorpe Handicap Chase The Grimthorpe Handicap Chase is a National Hunt handicap steeplechase in England which is open to horses aged five years or older. It is run at Doncaster over a distance of about 3 miles and 2 furlongs and during the race there are 19 fences to be jumped. The race is scheduled to take place each year in late February or early March. Prior to the early 1980s the Grimthorpe Chase was run over two miles and 150 yards. The distance was then upped dramatically nearly doubling to a stamina testing four miles and 100 yards. The