Prehistory. 1  Chang, Kwang-chih. 2  Discovery of residue from fermented beverage consumed up to 9,000 years ago in Jiahu, Henan Province, China. 3  Zhu, Rixiang; Zhisheng An; Richard Potts; Kenneth A. Hoffman. 4  The Discovery of Early Pottery in China by Zhang Chi, Department of Archaeology, Peking University, China.
There are a couple of popular ways of specifying the location of a celestial object. The first is what you would probably use to point out a star to your friend: the altitude-azimuth system. The altitude of a star is how many degrees above the horizon it is (anywhere from 0 to 90 degrees). The azimuth of a star is how many degrees along the horizon it is and corresponds to the compass direction. Azimuth starts from exactly North = 0 degrees azimuth and increases clockwise: exactly East = 90 degrees, exactly South = 180 degrees, exactly West = 270 degrees, and exactly North = 360 degrees = 0 degrees.
Arctic Circle: It is light 24 hours a day north of the Arctic Circle (66.5 degrees north) on the June Solstice. The sun at noon is 43 off zenith. Tropic of Cancer: On the June Solstice the sun is directly overhead the Tropic of Cancer (23.5 degrees north latitude) at noon.