Stargazing UK A to Z. A is for...
Arcturus or Alpha Bootis is one of the brightest stars in the Northern Hemisphere during Spring. Arcturus means Bear Watcher as it follows the Great Bear (Ursa Major) around the pole. Arktus is the name for bear, to which our word Arctic derived from.
Arcturus is 37 light years away which is around 217,509,138,807,793.486042 miles.
*Information from Jim Kaler from STARS