{"id":89,"date":"2006-08-26T07:12:12","date_gmt":"2006-08-26T06:12:12","guid":{"rendered":"http:\/\/www.rogerdarlington.me.uk\/wordpress\/?p=89"},"modified":"2006-08-26T07:12:12","modified_gmt":"2006-08-26T06:12:12","slug":"what-is-a-planet","status":"publish","type":"post","link":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/?p=89","title":{"rendered":"What is a planet?"},"content":{"rendered":"<p>Amazingly, until this week, there was no scientific agreement on what constitutes a planet. So, since 1930, Pluto has been called one, even though there has been increasing challenges to this classification.<br \/>\nAt the Interneraional Astronomical Union meeting in Prague this week, a definition was finally agreeed: a planet is a body that orbits the sun, is so large its own gravity makes it roughly spherical, and, crucially, also dominates its region of the solar system.<br \/>\nOn this basis of this definition, Pluto is not a planet, so all our textbooks will have to be revised. However, there is now a new term: dwarf planet. Apparently there are three of these: Pluto, Ceres (an asteriod between Mars and Jupiter) and Xena  (officially known as 2003 UB313).  A third category covers all other objects except satellites.<br \/>\nSo now you know. More information <a href=\"http:\/\/www.guardian.co.uk\/science\/story\/0,,1858043,00.html\">here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Amazingly, until this week, there was no scientific agreement on what constitutes a planet. So, since 1930, Pluto has been called one, even though there has been increasing challenges to this classification. At the Interneraional Astronomical Union meeting in Prague this week, a definition was finally agreeed: a planet is a body that orbits the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-89","post","type-post","status-publish","format-standard","hentry","category-science-technology"],"_links":{"self":[{"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=\/wp\/v2\/posts\/89","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=89"}],"version-history":[{"count":0,"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=\/wp\/v2\/posts\/89\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=89"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=89"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.rogerdarlington.me.uk\/nighthawk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=89"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}