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Jovian–Plutonian gravitational effect
The Jovian–Plutonian gravitational effect is a hoax phenomenon stated to cause a noticeable short-term reduction in gravity on Earth that was invented for April Fools' Day by the English astronomer Patrick Moore and broadcast on BBC Radio 2 on 1 April 1976.
==Background==
Patrick Moore (4 March 1923 – 9 December 2012) was the doyen of British television astronomers, boasting a long career in public service broadcasting, a quick-fire manner of speech, and a number of eccentric habits, including the wearing of a monocle. A wartime navigator in the Royal Air Force's Bomber Command, he was elected a Fellow of the Royal Astronomical Society in 1945 and presented BBC Television's ''The Sky at Night'' programme from 1957 until his death. He was appointed an Officer of the Order of the British Empire in 1968. Above all, Moore had a high level of public recognition in the United Kingdom as a respected astronomer.〔(Patrick Moore Biography ) online at hicelebs.com (accessed 27 March 2008)〕
The planet Jupiter is two and a half times as massive as all of the other planets in the Solar System combined.〔Beeb, Reta, ''Jupiter: The Giant Planet'' (Washington, D.C., Smithsonian Institution Press, 2nd edition, 1996, ISBN 1-56098-685-9)〕
Pluto is so small and so remote from the Sun and the Earth that it was not discovered until 1930.〔Tombaugh, Clyde W., ''The Search for the Ninth Planet, Pluto'' (Astronomical Society of the Pacific Leaflet No. 209, July 1946) reprinted in ''Mercury'' vol. 8, no. 1 (January/February 1979) pp 4-6〕 In 2006, the International Astronomical Union reclassified it as a dwarf planet, as it belongs to a belt of many similar small objects.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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