{"id":26539,"date":"2025-06-21T04:56:47","date_gmt":"2025-06-21T04:56:47","guid":{"rendered":"http:\/\/finn-family.com\/?p=26539"},"modified":"2025-06-21T04:56:47","modified_gmt":"2025-06-21T04:56:47","slug":"26539","status":"publish","type":"post","link":"http:\/\/finn-family.com\/?p=26539","title":{"rendered":""},"content":{"rendered":"<div><img src='https:\/\/apod.nasa.gov\/image\/2506\/AnalemmaEarthMars1200.jpg' style='max-width:600px;' \/><\/p>\n<div>Sure, that figure-8 shaped curve you get when you mark the position of the Sun in Earth&#8217;s sky at the same time each day over one year is called an analemma. On the left, Earth&#8217;s figure-8 analemma was traced by combining wide-angle digital images recorded during the year from December 2011 through December 2012. But the shape of an analemma depends on the eccentricity of a planet&#8217;s orbit and the tilt of its axis of rotation, so analemma curves can look different for different worlds. Take Mars for example. The Red Planet&#8217;s axial tilt is similar to Earth&#8217;s, but its orbit around the same sun is more eccentric (less circular) than Earth&#8217;s orbit. As seen from the Martian surface, the analemma traced in the right hand panel is shaped more like a tear drop. The Mars rover Opportunity captured the images used over the Martian year corresponding to Earth dates July 2006 to June 2008. Of course, each world&#8217;s solstice dates still lie at the top and bottom of their different analemma curves. The last Mars northern summer solstice was May 29, 2025. Our fair planet&#8217;s 2025 northern summer solstice is at June 21, 2:42 UTC. via NASA <a href=\"https:\/\/apod.nasa.gov\/apod\/ap250621.html\"><\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Sure, that figure-8 shaped curve you get when you mark the position of the Sun in Earth&#8217;s sky at the same time each day over one year is called an <a href=\"http:\/\/finn-family.com\/?p=26539\" class=\"more-link\">[&hellip;]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"Layout":"","footnotes":"","_links_to":"","_links_to_target":""},"categories":[9],"tags":[10,12],"class_list":["entry","author-admin","post-26539","post","type-post","status-publish","format-standard","category-whatsup","tag-ifttt","tag-nasa"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/posts\/26539","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/finn-family.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=26539"}],"version-history":[{"count":1,"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/posts\/26539\/revisions"}],"predecessor-version":[{"id":26540,"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/posts\/26539\/revisions\/26540"}],"wp:attachment":[{"href":"http:\/\/finn-family.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=26539"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/finn-family.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=26539"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/finn-family.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=26539"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}