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◄ | 20. århundre | ◄ 21. århundre ► | 22. århundre | ►
◄ | 1980-årene | 1990-årene | ◄ 2000-årene ► | 2010-årene | 2020-årene | ►
◄ ◄ | ◄ | 1995 | 1996 | 1997 | 1998 | 1999 | ◄ 20ki/Star" title="Star">star such as planets, moons, asteroids, meteoroids, comets, and cosmic dust.[1][2] The Sun together with its planetary system, which includes Earth, is known as the Solar System.[3][4]
2000 (MM) i den gregorianske kalenderen var et skuddår som begynte på en lørdag.
Avignon, Bergen, Bologna, Brussel, Helsingfors, Kraków, Reykjavík, Praha og Santiago de Compostela ble valgt til europeiske kulturhovedsteder for 2000.
Hendelser
Første kvartal
Andre kvartal
Tredje kvartal^ p. 394, The Universal Book of Astronomy, from the Andromeda Galaxy to the Zone of Avoidance, David J. Dsrling, Hoboken, New Jersey: Wiley, 2004. ISBN 0471265691.
^ p. 314, Collins Dictionary of Astronomy, Valerie Illingworth, London: Collins, 2000. ISBN 0-00-710297-6.
^ p. 382, Collins Dictionary of Astronomy.
^ p. 420, A Dictionary of Astronomy, Ian Ridpath, Oxford, New York: Oxford University Press, 2003. ISBN 0-19-860513-7.
^ planetary systems, formation of, David Darling, entry in The Internet Encyclopedia of Science, accessed on line September 23, 2007.
^ Planet formation scenarios, Philipp Podsiadlowski, pp. 149–165, in Planets around pulsars; Proceedings of the Conference, California Inst. of Technology, Pasadena, Apr. 30-May 1, 1992, edited by J. A. Phillips, J. E. Thorsest, and S. R. Kulkarni, ASP Conference Series, 36, 1993.
^ Wired News (2002-06-13). "Found: Solar System Like Our Own".
^ Whitney Clavin (2005-04-20). "NASA's Spitzer Telescope Sees Signs of Alien Asteroid Belt".
^ Christophe Lovis; Michel Mayor (2006-05-18). "Trio of Neptunes and their Belt".
^ Robert Roy Britt (2004-09-10). "Likely First Photo of Planet Beyond the Solar System".
^ "New planet found: It might hold life", San Francisco Chronicle (2007-04-24). Retrieved on 2007-04-24.
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