Towel Day is celebrated every year on 25 May as a tribute by fans of the late author Douglas Adamshttp://astronomy.activeboard.com/t36097321/towel-day/Geek Pride Day is an initiative which claims the right of every person to be a nerd or a geek. http://en.wikipedia.org/wiki/Geek_Pride_Day
Upshot-Knothole Grable was a nuclear weapons test conducted on May 25, 1953http://astronomy.activeboard.com/t43020266/shot-grable/The 2009 North Korean nuclear test was conducted on 25 May 2009http://astronomy.activeboard.com/t28095835/north-korean-nuclear-test/
On May 25, 1933, the Marpole Midden was recognised as a National Historic Site of Canadahttp://en.wikipedia.org/wiki/Great_Marpole_Midden#HistoryThe western face of Kukulcán's Pyramid points to sunset around 25 Mayhttp://en.wikipedia.org/wiki/Archaeoastronomy#El_CastilloThe 120-seat Peter Harrison Planetarium opened on 25 May 2007http://en.wikipedia.org/wiki/Peter_Harrison_PlanetariumVery Large Telescope first light on 25 May 1998. http://astronomy.activeboard.com/t13203441/very-large-telescope/The Scopes Trial was a landmark American legal case in 1925http://astronomy.activeboard.com/t49304544/the-scopes-trial/
John F. Kennedy first announced the goal of landing a man on the Moon on May 25, 1961
Dmitri Yur'yevich Kondrat'yev (born 25 May 1969) is a Russian cosmonaut. http://en.wikipedia.org/wiki/Dmitri_KondratyevGeorgy Mikhaylovich Grechko (25 May 1931 - 8 April 2017) was a Soviet cosmonauthttp://en.wikipedia.org/wiki/Georgy_GrechkoJohn Daniel "Danny" Olivas (born May 25, 1965) is a former NASA astronaut. http://en.wikipedia.org/wiki/John_D._OlivasIgor Ivanovich Sikorsky (May 25, 1889 - October 26, 1972) was a Russian American aviation pioneer http://en.wikipedia.org/wiki/Igor_SikorskyIvan Bella (born 25 May 1964 in Brezno, Czechoslovakia (present Slovakia)) is a Slovak Air Force officerhttp://en.wikipedia.org/wiki/Ivan_BellaPieter Zeeman (25 May 1865 - 9 October 1943) was a Dutch physicist http://en.wikipedia.org/wiki/Pieter_ZeemanHans Jakob "Jack" Steinberger (born May 25, 1921) is a German-American-Swiss physicisthttp://en.wikipedia.org/wiki/Jack_SteinbergerRichard Salisbury Ellis (born 25 May 1950) is the Steele Professor of Astronomy at Caltechhttp://en.wikipedia.org/wiki/Richard_Ellis_(astronomer)Daniel Moreau Barringer (May 25, 1860 - November 30, 1929) was a geologisthttp://en.wikipedia.org/wiki/Daniel_Barringer_(geologist)
It Came from Outer Space is a 1953 science fiction 3-D film directed by Jack Arnoldhttp://www.dailymotion.com/video/xm7xn9_it-came-from-outerspace_shortfilmshttp://en.wikipedia.org/wiki/It_Came_from_Outer_SpaceAlien is a science fiction horror film that opened in American theatres on May 25, 1979.http://astronomy.activeboard.com/t57658322/alien/Star Wars, now known as Star Wars Episode IV: A New Hope, was released on May 25, 1977http://en.wikipedia.org/wiki/Star_Wars_Episode_IV:_A_New_HopeThe film Return of the Jedi was released in theatres on May 25, 1983http://en.wikipedia.org/wiki/Return_of_the_Jedi
NGC 4948 was discovered by American astronomer Lewis A. Swift on the 25th May 1887. http://astronomy.activeboard.com/t57658310/ngc-4948/NGC 5982 was discovered by German-British astronomer William Herschel on the 25th May 1788. http://astronomy.activeboard.com/t57658305/ngc-5982/NGC 5985 was discovered by William Herschel on the 25th May 1788. http://astronomy.activeboard.com/t57658302/ngc-5985/NGC 5987 was discovered by William Herschel on the 25th May 1788. http://astronomy.activeboard.com/t57658298/ngc-5987/NGC 5989 was discovered by William Herschel on the 25th May 1788. http://astronomy.activeboard.com/t57658293/ngc-5989/
Nova Pictoris was discovered shortly before sunrise on the morning of May 25, 1925http://adsabs.harvard.edu/full/1947MNSSA...6....2VExtrasolar planet Eta2 Hydri b was discovered on the 25th May 2006 http://en.wikipedia.org/wiki/Eta2_Hydri_b
The earliest prediscovery image of 50000 Quaoar is a May 25, 1954 plate from Palomar Observatoryhttp://en.wikipedia.org/wiki/50000_QuaoarThe earliest documented sighting of Halley's Comet was on 25 May 240 BCE http://en.wikipedia.org/wiki/Halley%27s_Comet#Apparitions
MeteoritesThe Shuangyang (H5) meteorite fell in Jilin, China, on the 25th May, 1971.http://astronomy.activeboard.com/t49304970/shuangyang-meteorite/