A Transit of Mercury as seen from Mars on the 18th December, 2003http://en.wikipedia.org/wiki/Transit_of_Mercury_from_MarsTotal Eclipse of the Moon 1526 December 18-19http://astro.ukho.gov.uk/eclipse/1611526/L1526Dec18.pdf
The Epona feast day in the Roman calendar was on December 18 http://astronomy.activeboard.com/t11104480/epona/
The Battle of the Trebia was the first major battle of the Second Punic War, fought in December of 218 BChttp://astronomy.activeboard.com/t46862881/battle-of-the-trebia/The Battle of Verdun was fought between the German and French armies, from 21 February to 18 December 1916http://en.wikipedia.org/wiki/Battle_of_Verdun
The Tokyo Bay Aqua-Line is a bridge-tunnel combination across Tokyo Bay in Japan.http://astronomy.activeboard.com/t46846587/tokyo-bay-aqua-line/The Cliff Palace was first discovered on the 18th December, 1888http://astronomy.activeboard.com/t51948442/the-cliff-palace/
The Tupolev Tu-160 bomber made its first flight on 18/19 December 1981https://en.wikipedia.org/wiki/Tupolev_Tu-160
The SM-65 Atlas, the first ICBM was launched on the 18th December 1958http://en.wikipedia.org/wiki/SM-65_Atlashttp://astronomy.activeboard.com/t46846579/project-score/
Project SCORE (Signal Communications by Orbiting Relay Equipment) was the world's first communications satellitehttp://en.wikipedia.org/wiki/Project_SCORESoyuz 13 was launched on the 18th December 1973http://astronomy.activeboard.com/t39994113/soyuz-13/On December 18, 1999, NASA launched Terra, the first of a series of Earth monitoring satelliteshttp://astronomy.activeboard.com/t12533140/terra-satellite/The PARASOL satellite was launched on December 18, 2004http://en.wikipedia.org/wiki/Parasol_(satellite)JAXA Engineering Test Satellite ETS-VIII (Kiku 8) was launched on December 18, 2006.http://en.wikipedia.org/wiki/ETS-VIIIOn December 18, 2009, the SOFIA aircraft performed the first test flight in which the telescope door was fully opened.http://en.wikipedia.org/wiki/Stratospheric_Observatory_for_Infrared_AstronomyHelios 2B was launched on December 18, 2009http://astronomy.activeboard.com/t32327216/helios-2b-satellite/Göktürk-2 was launched on December 18, 2012http://en.wikipedia.org/wiki/G%C3%B6kt%C3%BCrk-2
Boris Valentinovich Volynov (born December 18, 1934) is a Soviet cosmonaut http://en.wikipedia.org/wiki/Boris_VolynovAndrew Sydney Withiel Thomas (18 December 1951) is an Australian-born American aerospace engineerhttp://en.wikipedia.org/wiki/Andy_Thomas
Dr. Reinhold Ewald (born December 18, 1956) is a German physicist and ESA astronauthttps://en.wikipedia.org/wiki/Reinhold_EwaldSir Joseph John "J. J." Thomson (18 December 1856 - 30 August 1940) was a British physicist http://astronomy.activeboard.com/t46846599/sir-joseph-john-j-j-thomson-1856-1940/Roger Clifton Jennison (18 December 1922 - 29 December 2006) worked as a radio astronomer at Jodrell Bank http://en.wikipedia.org/wiki/Roger_Clifton_Jennison
Schelte John "Bobby" Bus (born 1956) is an Associate Astronomer at the University of Hawaii Institute for Astronomyhttps://en.wikipedia.org/wiki/Schelte_J._BusStacie Powell (born 18 December 1985) is a British diver and astronomer. http://en.wikipedia.org/wiki/Stacie_PowellGottfried Kirch (December 18, 1639 - July 25, 1710) was a German astronomerhttp://en.wikipedia.org/wiki/Gottfried_Kirch
Esther Miriam Zimmer Lederberg (December 18, 1922 - November 11, 2006) was an American microbiologisthttps://en.wikipedia.org/wiki/Esther_Lederberg
The Piltdown Man was a hoax started on December 18, 1912. http://astronomy.activeboard.com/t51739747/piltdown-man/
The Nutcracker premièred at the Mariinsky Theatre in Saint Petersburg on Sunday, December 18, 1892.https://en.wikipedia.org/wiki/The_Nutcracker
The word "photon" appeared in a letter to the editor of Nature magazine (Vol. 118, Part 2, December 18, 1926)http://www.nobeliefs.com/photon.htm
NGC 1032 was discovered by German-British astronomer William Herschel on the 18th December 1783.http://astronomy.activeboard.com/t55961005/ngc-1032/NGC 2319 was discovered by William Herschel on the 18th December 1783.http://astronomy.activeboard.com/t55961109/ngc-2319/
Arche a moon of Jupiter was discovered on December 18, 2002http://en.wikipedia.org/wiki/Arche_(moon)On December 18, 1966, Richard Walker discovered Epimetheus.http://astronomy.activeboard.com/t3387122/epimetheus/
The Great Comet of 1680 passed closest to the sun on December 18http://en.wikipedia.org/wiki/Great_Comet_of_1680The December Coma Berenicids meteor shower peaks between December 18 and 25http://en.wikipedia.org/wiki/Coma_Berenices