{"id":1302,"date":"2010-01-22T19:44:20","date_gmt":"2010-01-22T19:44:20","guid":{"rendered":"http:\/\/spinor.info\/weblog\/?p=1302"},"modified":"2010-01-22T19:44:20","modified_gmt":"2010-01-22T19:44:20","slug":"tennis-ball","status":"publish","type":"post","link":"https:\/\/spinor.info\/weblog\/?p=1302","title":{"rendered":"Tennis ball"},"content":{"rendered":"<p>Here&#8217;s a nice tennis ball, photographed from both sides:<\/p>\n<p><a href=\"http:\/\/spinor.info\/weblog\/wp-content\/uploads\/2010\/01\/tennis.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-1303\" title=\"Tennis ball\" src=\"http:\/\/spinor.info\/weblog\/wp-content\/uploads\/2010\/01\/tennis-300x151.jpg\" alt=\"\" width=\"300\" height=\"151\" srcset=\"https:\/\/spinor.info\/weblog\/wp-content\/uploads\/2010\/01\/tennis-300x151.jpg 300w, https:\/\/spinor.info\/weblog\/wp-content\/uploads\/2010\/01\/tennis.jpg 440w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>It&#8217;s a big one, mind you, almost a thousand miles across. It&#8217;s Saturn&#8217;s moon Iapetus, famous because one side of it is significantly brighter than the other. The explanation, however, is more mundane than that offered in the book version of Clarke&#8217;s 2001: A Space Odyssey; the most recent hypothesis is that the discoloration is due to <a href=\"http:\/\/www.sciencemag.org\/cgi\/content\/abstract\/327\/5964\/432\">the thermal migration of ice<\/a>.<\/p>\n<fb:like href='https:\/\/spinor.info\/weblog\/?p=1302' send='false' layout='button_count' show_faces='true' width='450' height='65' action='like' colorscheme='light' font='lucida grande'><\/fb:like>","protected":false},"excerpt":{"rendered":"<p>Here&#8217;s a nice tennis ball, photographed from both sides: It&#8217;s a big one, mind you, almost a thousand miles across. It&#8217;s Saturn&#8217;s moon Iapetus, famous because one side of it is significantly brighter than the other. The explanation, however, is more mundane than that offered in the book version of Clarke&#8217;s 2001: A Space Odyssey; <a href='https:\/\/spinor.info\/weblog\/?p=1302' class='excerpt-more'>[&#8230;]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,3,26],"tags":[],"class_list":["post-1302","post","type-post","status-publish","format-standard","hentry","category-astronomy","category-physics","category-space","category-20-id","category-3-id","category-26-id","post-seq-1","post-parity-odd","meta-position-corners","fix"],"_links":{"self":[{"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/posts\/1302","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1302"}],"version-history":[{"count":1,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/posts\/1302\/revisions"}],"predecessor-version":[{"id":1304,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=\/wp\/v2\/posts\/1302\/revisions\/1304"}],"wp:attachment":[{"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1302"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1302"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/spinor.info\/weblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1302"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}