Annular solar eclipse, May 15, 1836http://astronomy.activeboard.com/t42850911/bailys-beads/
On May 15 the sun is directly overhead of the Observatory of Xochicalco.http://astronomy.activeboard.com/t53694991/xochicalco-observatory/Mercuralia is a Roman celebration known also as the "Festival of Mercury". http://en.wikipedia.org/wiki/MercuraliaKirkwood Observatory was dedicated on May 15, 1901,http://en.wikipedia.org/wiki/Kirkwood_ObservatoryJohannes Kepler third law of planetary motion was published in 1619 http://astronomy.activeboard.com/t42850774/kepler-third-law-of-planetary-motion/
The Cuerdale Hoard of Viking silver was discovered on the 15th May 1840https://en.wikipedia.org/wiki/Cuerdale_Hoard
The first heavy water reactor Chicago Pile-3 went critical on 15 May 1944. http://en.wikipedia.org/wiki/Chicago_Pile_3Operation Grapple was the name of a British nuclear test of the hydrogen bomb on 15 May 1957.http://astronomy.activeboard.com/t42850881/operation-grapple/
The first flight of the Gloster E28/39 jet aircraft was on the 15th May 1941http://astronomy.activeboard.com/t49154083/gloster-e2839/
Korabl-Sputnik 1 (also known as Sputnik 4) was launched on May 15, 1960.http://astronomy.activeboard.com/t10278719/sputnik-iv-satellite/Sputnik 3 (Russian: Satellite 3) was a Soviet satellite launched on May 15, 1958http://astronomy.activeboard.com/t21664124/sputnik-iii-satellite/Mercury-Atlas 9 was launched on the 15th May 1963http://astronomy.activeboard.com/t35893925/mercury-atlas-9/The Polyus prototype orbital weapons platform was launched on the 15th May 1987http://en.wikipedia.org/wiki/Polyus_(spacecraft)
STS-84 was launched on the 15th May 1997https://en.wikipedia.org/wiki/STS-84Soyuz TMA-04M Soyuz FG was launched on the 15th May 2012 http://en.wikipedia.org/wiki/Soyuz_TMA-04MThe first image of Earth taken by ESTCube-1 on May 15, 2013http://en.wikipedia.org/wiki/File:The_first_image_of_the_Earth,_taken_by_ESTCube-1_nanosatellite..pngGPS 2F-4 satellite was launched on the 15th May 2014http://astronomy.activeboard.com/t53701939/gps-2f-4-satellite/
Anthony Wayne England (born May 15, 1942) is a former NASA astronaut.http://en.wikipedia.org/wiki/Anthony_W._EnglandFrank Lee Culbertson Jr. (born on May 15, 1949) is a former NASA astronaut http://en.wikipedia.org/wiki/Frank_L._Culbertson,_Jr.Frank Anthony Wilczek (born May 15, 1951) is a theoretical physicist from the United Stateshttp://en.wikipedia.org/wiki/Frank_WilczekRobijn F. Bruinsma (born May 15, 1953, Haarlem, The Netherlands) is a theoretical physicist http://en.wikipedia.org/wiki/Robijn_BruinsmaZhou Guangzhao (born May 15, 1929) is a Chinese physicist.http://en.wikipedia.org/wiki/Zhou_GuangzhaoMaria Reiche (1903-1998) was a German mathematician and archaeologisthttp://en.wikipedia.org/wiki/Maria_ReicheHenrik Mohn (15 May 1835 - 12 September 1916) was a Norwegian astronomer and meteorologist.http://en.wikipedia.org/wiki/Henrik_Mohn
Michael C. Malin (born 1950) is an American astronomer, space-scientist, and CEO of Malin Space Science Systems.http://en.wikipedia.org/wiki/Michael_C._MalinMaximilian Hell, S.J. (May 15, 1720 - April 14, 1792) was a Hungarian astronomer http://en.wikipedia.org/wiki/Maximilian_HellWilliamina Paton Stevens Fleming (May 15, 1857 - May 21, 1911) was a Scottish astronomer. http://astronomy.activeboard.com/t49154167/williamina-fleming-1857-1911/Stuart Kingsley (born May 15, 1948) is considered a pioneer in Optical SETIhttp://en.wikipedia.org/wiki/Stuart_Kingsley
Star Wars Episode III: Revenge of the Sith is a 2005 American epic space opera filmhttp://en.wikipedia.org/wiki/Star_Wars_Episode_III:_Revenge_of_the_Sith
NGC 5804 was discovered by German-British astronomer William Herschel on the 15th May 1787. http://astronomy.activeboard.com/t57572606/ngc-5804/NGC 6375 was discovered by German astronomer Albert Marth on the 15th May 1864. http://astronomy.activeboard.com/t57572520/ngc-6375/NGC 6379 was discovered by German astronomer Albert Marth on the 15th May 1864. http://astronomy.activeboard.com/t57572474/ngc-6379/
The discovery images of the Plutonian moons Nix and Hydra were taken on May 15, 2005http://en.wikipedia.org/wiki/Nix_(moon)#Discoveryhttp://en.wikipedia.org/wiki/Hydra_(moon)#Discovery
The Alpha-Scorpiids meteor shower peakhttp://astronomy.activeboard.com/t35910679/alpha-scorpiids-meteor-shower/Daytime Arietidshttp://astronomy.activeboard.com/t53968905/daytime-arietids/
MeteoritesThe Felix (CO3.3) meteorite fell in Alabama, USA, on the 15th May, 1900.http://astronomy.activeboard.com/t49154042/felix-meteorite/The Junan (L6) meteorite fell in Shandong, China, on the 15th May, 1976.http://astronomy.activeboard.com/t49154040/junan-meteorite/