Minister for Industry and Commerce Andrew Peacock. March 9 – The 3D printer is invented by Chuck Hull. March 21 – Yamoussoukro officially becomes the Ivorian political capital after transfer from Abidjan. April April 4 – The Space Shuttle Challenger is launched on its maiden voyage: STS-6. April 11 – Spain's Seve Ballesteros won the 47th PGA Masters Tournament April 18 – The 1983 United States embassy bombing in Beirut kills 63 people. April 22 – A reactor shut-down due to failure of fuel rods occurs at Kursk Nuclear Power Plant, Russia. May May 6 – Stern magazine publishes the "Hitler Diaries" (which are later found to be forgeries). May 11 – Aberdeen F.C. beat Real Madrid 2–1 (after extra time) to win the European Cup Winners' Cup in 1983 and become only the third Scottish side to win a European trophy. May 17 – Lebanon, Israel, and the United States sign an agreement on Israeli withdrawal from Lebanon. May 20 Two separate research groups led by Robert Gallo and Luc Montagnier independently declare that a novel retrovirus may have been infecting people with HIV/AIDS, and publish their findings in the same issue of the journal Science. Church Street bombing: A car bombing in Pretoria, South Africa, kills 19 people. The bomb has been planted by members of Umkhonto we Sizwe, a military wing of the African National Congress. May 25 – Hamburger SV defeat Juventus 1-0 in the final of the European Cup. May 26 – The 7.8 Sea of Japan earthquake shakes northern Honshu with a maximum Mercalli intensity of VIII (Severe). A destructive tsunami is generated that leaves about 100 people dead. May 27 – Benton fireworks disaster. An explosion at an unlicensed and illegal fireworks operation near Benton, Tennessee, kills eleven and injures one. The blast is heard within a radius of . May 28 – The 9th G7 summit begins at Williamsburg, Virginia, United States. June June 9 – Britain's Conservative government, led by Margaret Thatcher, is re-elected by a landslide majority. June 13 – Pioneer 10 passes the orbit of Neptune, becoming the first man-made object to leave the vicinity of the major planets of the Solar System. June 18 – Iranian teenager Mona Mahmudnizhad and nine other women are hanged because they are members of the Baháʼí Faith. June 18–19 – The team of Vern Schuppan, Al Holbert and Hurley Haywood wins the