{"id":23869,"date":"2025-09-14T11:20:34","date_gmt":"2025-09-14T10:20:34","guid":{"rendered":"https:\/\/www.earth-site.co.uk\/Education\/?p=23869"},"modified":"2025-09-14T11:20:46","modified_gmt":"2025-09-14T10:20:46","slug":"year-1930","status":"publish","type":"post","link":"https:\/\/www.earth-site.co.uk\/Education\/year-1930\/","title":{"rendered":"Year 1930"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.16&#8243; global_colors_info=&#8221;{}&#8221; locked=&#8221;off&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_row column_structure=&#8221;1_2,1_2&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_code _builder_version=&#8221;4.27.4&#8243; 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background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221; hover_enabled=&#8221;0&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;]<\/p>\n<p><!-- divi:shortcode --><\/p>\n<table class=\"tdih_table\"><thead><th class=\"tdih_event_date\">Date<\/th><th class=\"tdih_event_type\">Type<\/th><th class=\"tdih_event_name\">Event<\/th><\/thead><tr><td class=\"tdih_event_date\">1930-02-18<\/td><td class=\"tdih_event_type\"><\/td><td class=\"tdih_event_name\"><strong>In 1930<\/strong>\u00a0<a title=\"Pluto &#8211; the Dwarf Planet\" href=\"https:\/\/www.earth-site.co.uk\/Education\/pluto\/\">Pluto<\/a>\u00a0was discovered at the Lowell observatory in Arizona,\u00a0<a title=\"United States of America\" href=\"https:\/\/www.earth-site.co.uk\/Education\/united-states\/\">US<\/a> by astronomer Clyde W. Tombaugh. The ninth planet was first proposed by Percival Lowell, an American businessman who became an accomplished astronomer. He predicted a ninth planet or \u2018planet X\u2019 as he called it from the perturbations (a slight wobble or deviation) of the orbital path of Uranus and Neptune (These wobbles are normally caused by the gravitational pull of foreign bodies). He searched for many years at the Lowell observatory, which he founded, but was unable to find planet X. After his death, as lens technology improved the observatory were able to install a larger, more powerful telescope which Tombaugh used to continue the search. On this day in 1930 Tombaugh found the tiny planet but the observatory waited until the anniversary of Lowell\u2019s birth (13<sup>th<\/sup>\u00a0of March) to announce their findings.<\/td><\/tr><tr><td class=\"tdih_event_date\">1930-05-01<\/td><td class=\"tdih_event_type\"><\/td><td class=\"tdih_event_name\">  <p>&nbsp;<\/p>\r\n  <h2 class=\"MsoNormal1\" style=\"text-align:justify;text-indent:36.0pt;\"><strong><span style=\"font-family:'Verdana','sans-serif'; \">On this day in 1930 the dwarf planet Pluto was officially named.<\/span><\/strong><\/h2>\r\n  <p style=\"text-align:justify;text-indent:36.0pt;\">&nbsp;<\/p>\r\n  <p class=\"MsoNormal1\" style=\"text-align:justify;\"><span style=\"font-family:'Verdana','sans-serif'; \"><a href=\"..\/pluto\">Pluto<\/a> was first predicted by astronomer Percival Lowell but it was not actually  discovered until the 18th of February 1930 by&nbsp;astronomer Clyde W. Tombaugh  working at the Lowell observatory which was set up to find the illusive planet..  Percival always referred to the predicted planet as &ldquo;Planet X&rdquo;. The discovery  was made public to coincide with the 75th&nbsp;anniversary of Lowell&rsquo;s birth on  the 13th&nbsp;of March 1930. On the 14th&nbsp;of March the story was being read  around the breakfast table in Oxford, <a href=\"..\/england\">England<\/a> to a young 11-year-old girl  called Venetia Burney by her granddad. They were discussing possible names and  due to Venetia&rsquo;s current interest in Roman and Greek gods as well as an  understanding of the planets and their distance from the <a href=\"..\/sun\">Sun<\/a>, she suggested  Pluto. This was because Pluto was the god of the underworld, who could make  himself invisible and lived where sunlight didn&rsquo;t reach. Venetia&rsquo;s granddad was  Falconer Madan, a retired head librarian from Oxford University and friend of  the professor of astronomy there, Herbert Hall Turner. The Percival Observatory  were very impressed with the name, in part because the first two letters were  the initials of its founder Percival&nbsp;  Lowell. On this day it was officially named Pluto. <\/span><\/p>\r\n  <p class=\"MsoNormal\" style=\"text-align:justify;\">&nbsp;<\/p><\/td><\/tr><tr><td class=\"tdih_event_date\">1930-08-16<\/td><td class=\"tdih_event_type\"><\/td><td class=\"tdih_event_name\"><p>&nbsp;<\/p> \r\n <p class=\"MsoNormal\" style=\"text-align:justify;text-indent:36.0pt;\"><strong><span style=\"line-height:115%; font-family:'Verdana','sans-serif'; font-size:10.0pt; \">In 1930 the first British Commonwealth  Games (often erroneously called the British Empire Games) were held in Ontario,  Canada.<\/span><\/strong><\/p>\r\n<p>&nbsp;<\/p>\r\n  <p class=\"MsoNormal\" style=\"text-align:justify;text-indent:36.0pt;\"><span style=\"font-family:'Verdana','sans-serif'; font-size:10.0pt; \">The  first games had 400 athletes from 11 nations participating in 59 events. The  athletes came from <a title=\"Australia\" href=\"http:\/\/www.earth-site.co.uk\/Education\/australia\/\">Australia<\/a>, <a title=\"Bermuda\" href=\"http:\/\/www.earth-site.co.uk\/Education\/bermuda\/\">Bermuda<\/a>, British Guiana, <a title=\"Canada\" href=\"http:\/\/www.earth-site.co.uk\/Education\/canada\/\">Canada<\/a>, <a title=\"England\" href=\"http:\/\/www.earth-site.co.uk\/Education\/england\/\">England<\/a>,  <a title=\"Ireland\" href=\"http:\/\/www.earth-site.co.uk\/Education\/ireland\/\">Ireland<\/a>, Newfoundland, <a title=\"New Zealand\" href=\"http:\/\/www.earth-site.co.uk\/Education\/new-zealand\/\">New Zealand<\/a>, <a title=\"Scotland\" href=\"http:\/\/www.earth-site.co.uk\/Education\/scotland\/\">Scotland<\/a>, <a title=\"South Africa\" href=\"http:\/\/www.earth-site.co.uk\/Education\/south-africa\/\">South Africa<\/a> and Wales.<\/span><\/p>\r\n<p>&nbsp;<\/p>\r\n  <p class=\"MsoNormal\" style=\"text-align:justify;text-indent:36.0pt;\"><span style=\"font-family:'Verdana','sans-serif'; font-size:10.0pt; \">In  1949 it was agreed that member states no longer had to pledge allegiance to the  <a title=\"United Kingdom\" href=\"http:\/\/www.earth-site.co.uk\/Education\/united-kingdom\/\">British<\/a> crown which allowed <a title=\"India\" href=\"http:\/\/www.earth-site.co.uk\/Education\/india\/\">India<\/a> to stay as a commonwealth member while still  becoming a republic. This change of policy led to the name changing to <a title=\"British Commonwealth of Nations: Member States and Countries\" href=\"http:\/\/www.earth-site.co.uk\/Education\/the-commonwealth-of-nations\/\">the  Commonwealth of Nations<\/a> but it was not until the 1978 games held in Edmonton  that the name for the games changed from the British Commonwealth Games to the  Commonwealth Games.&nbsp; <\/span><\/p>\r\n<p>&nbsp;<\/p><\/td><\/tr><\/table>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><!-- \/divi:shortcode --><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;1_2,1_2&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; 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The ninth planet&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_wds_readability":["a:4:{s:5:\"score\";i:62;s:9:\"raw_score\";i:62;s:11:\"is_readable\";b:1;s:5:\"error\";b:0;}"],"_edit_last":["1"],"_wds_twitter":["a:1:{s:8:\"disabled\";b:1;}"],"_wds_primary_term_category":["false"],"_wds_save_primary_category_nonce":["8a59ae3053"],"_wds_trimmed_excerpt":["&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;"],"_et_pb_use_builder":["on"],"_et_pb_old_content":[""],"site-sidebar-layout":["default"],"ast-site-content-layout":["default"],"site-content-style":["default"],"site-sidebar-style":["default"],"theme-transparent-header-meta":["default"],"_yoast_wpseo_primary_category":[""],"_yoast_wpseo_content_score":["30"],"_yoast_wpseo_estimated-reading-time-minutes":["3"],"_edit_lock":["1757845266:1"],"_et_pb_built_for_post_type":["page"],"_et_pb_ab_subjects":[""],"_et_pb_enable_shortcode_tracking":[""],"_et_pb_ab_current_shortcode":["[et_pb_split_track id=\"23869\" \/]"],"_et_pb_custom_css":[""],"_et_pb_gutter_width":["3"],"_global_colors_info":["{}"],"_et_builder_version":["VB|Divi|4.27.4"],"_et_pb_show_page_creation":["off"],"astra-migrate-meta-layouts":["set"],"_wds_focus-keywords":[""],"_et_dynamic_cached_shortcodes":["a:5:{i:0;s:13:\"et_pb_section\";i:1;s:9:\"et_pb_row\";i:2;s:12:\"et_pb_column\";i:12;s:10:\"et_pb_code\";i:50;s:10:\"et_pb_text\";}"],"_et_dynamic_cached_attributes":["a:0:{}"]},"categories":[1],"tags":[],"class_list":["post-23869","post","type-post","status-publish","format-standard","hentry","category-generalknowledge"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Year 1930 - Earth Site Education<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.earth-site.co.uk\/Education\/year-1930\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Year 1930 - Earth Site Education\" \/>\n<meta property=\"og:description\" content=\"TIMELINE 1900&#039;s DateTypeEvent1930-02-18In 1930\u00a0Pluto\u00a0was discovered at the Lowell observatory in Arizona,\u00a0US by astronomer Clyde W. 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