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61Astronomy — (from the Greek words astron (ἄστρον), star , and nomos (νόμος), law ) is the scientific study of celestial objects (such as stars, planets, comets, and galaxies) and phenomena that originate outside the Earth s atmosphere (such as the cosmic… …
62History of timekeeping devices — For thousands of years, devices have been used to measure and keep track of time. The current sexagesimal system of time measurement dates to approximately 2000 BC, in Sumer. The Ancient Egyptians divided the day into two 12 hour periods, and… …
632000s (decade) — …
64Incheon International Airport — Infobox Airport name = Incheon International Airport nativename = nativename a = 인천국제공항 仁川國際空港 nativename r = Incheon Gukje Gonghang Inch ŏn Kukche Konghang caption = image width = caption = Incheon International Airport Passenger Terminal IATA …
65BBC Online — URL bbc.co.uk Commercial? No Type of site Portal …
66Naval Space command — Active October 1, 1983 – present Country …
67List of miscellaneous ships in Battlestar Galactica (2004) — There have been many appearances of various spaceships in the re imagined Battlestar Galactica science fiction television series, with the primary means of travel being FTL. hips Adriatic The Adriatic is one of the few ships in President Laura… …
68Earth and Space Sciences — ▪ 1996 Introduction GEOLOGY AND GEOCHEMISTRY In 1995 significant developments took place in the realm of geologic mapping, which provides the foundation for the presentation and comparison of data in the Earth sciences. The most important… …
69Dead reckoning — For other uses, see Dead reckoning (disambiguation). The navigator plots his 9am position, indicated by the triangle, and, using his course and speed, estimates his position at 9:30am and 10am. In navigation, dead reckoning (also ded (for… …
70Scientific research in Canada — This article outlines the history of natural scientific research in Canada including, mathematics, physics, astronomy, space science, geology, oceanography, chemistry, biology, medical research and psychology. The social sciences are not treated… …
