Carolyn S. Shoemaker of Technology, Pasadena, California, and the Palomar Observatory, San Diego, California. That year, Shoemaker was hired at the United States Geological Survey as a visiting scientist in the astronomy branch, and then in 1989 began work as an astronomy research professor at Northern Arizona University. She concentrated her work on searching for comets and planet-crossing asteroids. Teamed with astronomer David H. Levy, the Shoemakers identified Shoemaker-Levy 9, a fragmented comet orbiting the planet Jupiter on March 24, 1993. After Gene's death in 1997, Shoemaker continued to work at the Lowell Observatory with Levy, and continues to work there today. In
Great Comet of 1744 "dust striae" seen in the tails of some comets, such as Comet West and C/2006 P1 (McNaught). Chéseaux, on March 9, was the last known observer in the northern hemisphere to see the comet, but it remained visible for observers in the southern hemisphere, some of whom reported a tail length of approximately 90 degrees on March 18. The comet was not seen after April 22, 1744. The comet also was noted in Japanese astronomical records in the "Nihon Odai Ichiran" of the Kanpō era. Researchers have found in Chinese astronomical records that some Chinese observations describe audible sounds associated