Labels:text | font | screenshot | paper | document OCR: MANY PROMINENT STARS have names. These are often Arabic in origin, a legacy from the ancient Arabic astronomers of the 8th and 9th centuries AD. The vast majority of stars are not named, however. Instead, a star is normally identified by the Latin name of its constellation and a letter of the Greek alphabet. This system was introduced by German amateur astronomer Johann Bayer (1572-1625), who published a star atlas in 1603. According to Bayer's system, the brightest star in a constellation is normally allocated an Alpha (a, the Greek letter for "A"), the second brightest a Beta (B, B), and so on. When referring to a particular star, the possessive case of the constellation's Latin name is used. The brightest star in the constellation of Cygnus, for example, is known as Alpha Cygni ("Cygnus ...