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Halley's Comet or Comet Halley is a short-period comet visible from Earth every 75–76 years. Halley is the only short-period comet that is clearly visible to the naked eye from Earth, and the only naked-eye comet that might appear twice in a human lifetime. Halley last appeared in the inner Solar System in 1986 and will next appear in mid-2061.
Pearl Harbor is a lagoon harbor on the island of Oahu, Hawaii, west of Honolulu. Much of the harbor and surrounding lands is a United States Navy deep-water naval base. It is also the headquarters of the United States Pacific Fleet. <br/><br/>

The U.S. government first obtained exclusive use of the inlet and the right to maintain a repair and coaling station for ships here in 1887. The attack on Pearl Harbor by the Empire of Japan on December 7, 1941 was the immediate cause of the United States' entry into World War II.
Halley's Comet or Comet Halley is a short-period comet visible from Earth every 75–76 years. Halley is the only short-period comet that is clearly visible to the naked eye from Earth, and the only naked-eye comet that might appear twice in a human lifetime. Halley last appeared in the inner Solar System in 1986 and will next appear in mid-2061.
George Adams, the Younger (1750 - 1795), son of George Adams (c. 1709 - 1773), was the author of a number of influential scientific works, including <i>Essays on the Microscope</i>, <i>Astronomical and Geographical Essays</i> and <i>Lectures on Natural and Experimental Philosophy</i>. He was also a globe maker.
James Ferguson (25 April 1710 – 17 November 1776) was a Scottish astronomer, instrument and globe maker.<br/><br/>

It is as the inventor and improver of astronomical and other scientific apparatus, and as a striking instance of self-education, that he claims a place among the most remarkable men of science of his country.
James Ferguson (25 April 1710 – 17 November 1776) was a Scottish astronomer, instrument and globe maker.<br/><br/>

It is as the inventor and improver of astronomical and other scientific apparatus, and as a striking instance of self-education, that he claims a place among the most remarkable men of science of his country.
Shanghai (Chinese: 上海) is the largest city by population in China and the largest city proper in the world. It is one of the four province-level municipalities in the People's Republic of China, with a population of over 23 million as of 2010. Due to its rapid development over the last two decades it has again become a global city, exerting influence over commerce, finance, media, fashion, technology and culture. Today Shanghai is a major financial centre and the busiest container port in the world.<br/><br/>

Located in the Yangtze River Delta in eastern China, Shanghai sits at the mouth of the Yangtze River in the middle portion of the Chinese coast. The municipality borders Jiangsu and Zhejiang Provinces to the west, and is bounded to the east by the East China Sea.<br/><br/>

Once a fishing and textiles town, Shanghai grew in importance in the 19th century due to its favourable port location and was one of the cities opened to foreign trade by the 1842 Treaty of Nanking. The city then flourished as a centre of commerce between east and west, and became a multinational hub of finance and business in the 1930s. However, with the Communist Party takeover of the mainland in 1949, the city's international influence declined. In 1990, the economic reforms introduced by Deng Xiaoping resulted in an intense re-development of the city, aiding the return of finance and foreign investment to the city.<br/><br/>

Shanghai is also a popular tourist destination renowned for its historical landmarks such as The Bund, City God Temple and Yuyuan Garden, as well as the extensive and growing Pudong skyline.