{"id":2723,"date":"2009-06-04T03:00:25","date_gmt":"2009-06-04T08:00:25","guid":{"rendered":"http:\/\/blogs.scienceforums.net\/swansont\/?p=2723"},"modified":"2009-06-04T03:00:25","modified_gmt":"2009-06-04T08:00:25","slug":"here-comes-the-sun-1","status":"publish","type":"post","link":"http:\/\/blogs.scienceforums.net\/swansont\/archives\/2723","title":{"rendered":"(Here Comes the Sun) (-1)"},"content":{"rendered":"<p><a href=\"http:\/\/www.newscientist.com\/article\/dn17228-why-is-the-earth-moving-away-from-the-sun.html\">Why is the Earth moving away from the sun?<\/a><\/p>\n<p>Short answer:  tidal friction, the same reason the moon is receding from us.<\/p>\n<p>But there&#8217;s a &#8220;what the?&#8221; in the story.<\/p>\n<blockquote><p>[T]he sun-Earth distance has been pegged with remarkable accuracy. The current value stands at 149,597,870.696 kilometres.<\/p>\n<p>Having such a precise yardstick allowed Russian dynamicists Gregoriy A. Krasinsky and Victor A. Brumberg to calculate, in 2004, that the sun and Earth are gradually moving apart. It&#8217;s not much \u2013 just 15 cm per year \u2013 but since that&#8217;s 100 times greater than the measurement error, something must really be pushing Earth outward.<\/p><\/blockquote>\n<p>No error is reported, but presumably the error is in the last digit of the value, 0.001 km.  One one-thousandth of a kilometer is a meter.  15 cm is <em>smaller<\/em> than that.  If the error is as was reported, it should be a few millimeters.  If that&#8217;s the error, why isn&#8217;t the distance known and reported to that level?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Why is the Earth moving away from the sun? Short answer: tidal friction, the same reason the moon is receding from us. But there&#8217;s a &#8220;what the?&#8221; in the story. [T]he sun-Earth distance has been pegged with remarkable accuracy. The &hellip; <a href=\"http:\/\/blogs.scienceforums.net\/swansont\/archives\/2723\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39],"tags":[],"class_list":["post-2723","post","type-post","status-publish","format-standard","hentry","category-physics"],"_links":{"self":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/2723","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/comments?post=2723"}],"version-history":[{"count":0,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/2723\/revisions"}],"wp:attachment":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/media?parent=2723"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/categories?post=2723"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/tags?post=2723"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}