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A comet is an icy, small Solar System ... It was found that the surface of comet Borrelly is hot and dry, with a temperature of between 26 and 71 °C (79 and 160 °F
Comet Hyakutake (formally designated C/1996 B2) is a comet discovered on 31 January 1996. [1] ... Hyakutake's ices must have formed at temperatures of 20 ...
The comet is currently moving through the Southern hemisphere and will cross the celestial equator (yellow vertical line) in 2032. The apparent loops in the comet's path are caused by the annual motion of the Earth around the Sun. With a current declination of −47° below the celestial equator, C/2014 UN 271 is best seen from the Southern ...
Halley's Comet is the only known short-period comet that is consistently visible to the naked eye from Earth, [16] appearing every 72–80 years, [17] though with the majority of recorded apparations (25 of 30) occurring after 75–77 years.
The dust production rate of the comet was very high (up to 2.0 × 10 6 kg/s), [43] which may have made the inner coma optically thick. [44] Based on the properties of the dust grains – high temperature, high albedo and strong 10 μm silicate emission feature – the astronomers concluded the dust grains are smaller than observed in any other ...
The comet was first photographed by astronomer Lin Chi-Sheng (林啟生) with a 0.41-metre (16 in) telescope at the Lulin Observatory in Nantou, Taiwan on July 11, 2007. . However, it was the 19-year-old Ye Quanzhi (葉泉志) from Sun Yat-sen University in China, who identified the new object from three of the photographs taken by Lin
This is a list of comets (bodies that travel in elliptical, parabolic, and sometimes hyperbolic orbits and display a tail behind them) listed by type. Comets are sorted into four categories: periodic comets (e.g. Halley's Comet), non-periodic comets (e.g. Comet Hale–Bopp), comets with no meaningful orbit (the Great Comet of 1106), and lost comets (), displayed as either P (periodic), C (non ...
McCartney, Eugene S. “Clouds, Rainbows, Weather Galls, Comets, and Earthquakes as Weather Prophets in Greek and Latin Writers (Concluded).” The Classical Weekly, vol. 23, no. 2, 1929, pp. 11–15. Retrieved 2019-11-26. Needham, J. “Astronomy in Ancient and Medieval China.” Philosophical Transactions of the Royal Society of London.