{"id":12157,"date":"2007-11-02T07:38:57","date_gmt":"2007-11-02T14:38:57","guid":{"rendered":"http:\/\/hill-kleerup.org\/blog\/wp\/2007\/11\/02\/our-constant-moon.html"},"modified":"2007-11-02T07:38:57","modified_gmt":"2007-11-02T14:38:57","slug":"our_constant_moon","status":"publish","type":"post","link":"https:\/\/hill-kleerup.org\/blog\/2007\/11\/02\/our_constant_moon.html","title":{"rendered":"Our constant moon?"},"content":{"rendered":"
\"\"<\/div>\n

Not if you take two years worth of moon pictures<\/a> and put them into a two second film loop.  Freaky.<\/p>\n

\n

This video is a fantastic articulation of the fact that the Moon’s orbit around Earth is not, in fact, a perfect circle, but rather an ellipse (with about 5% eccentricity) which travels closer and then farther away in turn and changing apparent size in the process. The orbit is tilted slightly with respect to Earth’s daily planetary rotation, presenting slightly varying angles, and there is obviously some wobble in the orbital path, which astronomers call libration. In total, we actually see somewhere closer to 59% of the Moon over time rather than what the pedestrian 50% bright-side model would offer.<\/p>\n<\/blockquote>\n

Or, as Juliet put it …<\/p>\n

\n

O, swear not by the moon, the fickle moon, the inconstant moon, that monthly changes in her circle orb, Lest that thy love prove likewise variable.<\/p>\n<\/blockquote>\n

Or at least wobbly.<\/p>\n","protected":false},"excerpt":{"rendered":"

Not if you take two years worth of moon pictures and put them into a two second film loop.  Freaky. This video is a fantastic articulation of the fact…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[6],"tags":[],"class_list":["post-12157","post","type-post","status-publish","format-standard","hentry","category-science"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":127450,"url":"https:\/\/hill-kleerup.org\/blog\/2015\/08\/05\/earth-and-moon.html","url_meta":{"origin":12157,"position":0},"title":"Earth and Moon","author":"***Dave","date":"Wed 5-Aug-15 4:44pm","format":false,"excerpt":"Okay, seeing the Earth and the Moon, together, from beyond the Moon's orbit is ... pretty darned remarkable, if you think about it. Very cool. Originally shared by +NASA: The far side of the moon, illuminated by the sun, is seen as it crosses between our 'EPIC' camera on the\u2026","rel":"","context":"In "~PlusPosts"","block_context":{"text":"~PlusPosts","link":"https:\/\/hill-kleerup.org\/blog\/category\/blogging\/plusposts"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/hill-kleerup.org\/blog\/wp\/wp-content\/uploads\/2015\/08\/earth_moon_animation1041.gifimgmax%3D660.gif?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/hill-kleerup.org\/blog\/wp\/wp-content\/uploads\/2015\/08\/earth_moon_animation1041.gifimgmax%3D660.gif?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/hill-kleerup.org\/blog\/wp\/wp-content\/uploads\/2015\/08\/earth_moon_animation1041.gifimgmax%3D660.gif?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":40305,"url":"https:\/\/hill-kleerup.org\/blog\/2014\/01\/06\/there-are-more-things-in-heaven-and-around-earth-horatio.html","url_meta":{"origin":12157,"position":1},"title":"There are more things in Heaven and around Earth, Horatio …"","author":"***Dave","date":"Mon 6-Jan-14 4:20pm","format":false,"excerpt":"And always watch the skies.(h\/t +Doyce Testerman)Reshared post from +John BaezWhat goes around, comes aroundOn September 3, 2002, an amateur astronomer named Bill Yeung looked into his telescope and discovered a strange object near Earth.\u00a0 Experts were surprised to discover that it was orbiting Earth!\u00a0 The orbit was unstable, which\u2026","rel":"","context":"In "~PlusPosts"","block_context":{"text":"~PlusPosts","link":"https:\/\/hill-kleerup.org\/blog\/category\/blogging\/plusposts"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":3593,"url":"https:\/\/hill-kleerup.org\/blog\/2002\/10\/22\/shine_on.html","url_meta":{"origin":12157,"position":2},"title":"Shine on …","author":"***Dave","date":"Tue 22-Oct-02 9:31am","format":false,"excerpt":"Harvest Moon is the full moon closest to (or, by some sources, the full moon following) the Autumnal Equinox on 22 September. This was a classic traditional time for bringing...","rel":"","context":"In "Science & Nature"","block_context":{"text":"Science & Nature","link":"https:\/\/hill-kleerup.org\/blog\/category\/science"},"img":{"alt_text":"harvestmoon.jpg","src":"https:\/\/i0.wp.com\/www.hill-kleerup.org\/blog\/images\/harvestmoon.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":11530,"url":"https:\/\/hill-kleerup.org\/blog\/2007\/08\/06\/moon_shots.html","url_meta":{"origin":12157,"position":3},"title":"Moon Shots","author":"***Dave","date":"Mon 6-Aug-07 10:17pm","format":false,"excerpt":"Very cool site at ASU (with cooperation of the Johnson Space Center) that's scanning in the original moon photos from the Apollo program.\u00a0 Most photographic resources available have been...","rel":"","context":"In "Science & Nature"","block_context":{"text":"Science & Nature","link":"https:\/\/hill-kleerup.org\/blog\/category\/science"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.hill-kleerup.org\/blog\/images\/moon.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":52000,"url":"https:\/\/hill-kleerup.org\/blog\/2015\/07\/31\/one-more-moon-one-more-month-one-month-more.html","url_meta":{"origin":12157,"position":4},"title":"One More Moon, One More Month, One Month More","author":"***Dave","date":"Fri 31-Jul-15 4:45pm","format":false,"excerpt":"a\/k\/a \"Rumors of my unemployment have been (slightly) exaggerated.\"My current employer has offered me some additional project work that will extend my lay-off date from this coming Monday to the beginning of September. Which is a bit of a relief (or at least it pushes back the images of living\u2026","rel":"","context":"In "~PlusPosts"","block_context":{"text":"~PlusPosts","link":"https:\/\/hill-kleerup.org\/blog\/category\/blogging\/plusposts"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/hill-kleerup.org\/blog\/wp\/wp-content\/uploads\/2015\/07\/Phases10-7x-2w5B15D.jpgimgmax%3D660.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/hill-kleerup.org\/blog\/wp\/wp-content\/uploads\/2015\/07\/Phases10-7x-2w5B15D.jpgimgmax%3D660.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/hill-kleerup.org\/blog\/wp\/wp-content\/uploads\/2015\/07\/Phases10-7x-2w5B15D.jpgimgmax%3D660.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":15275,"url":"https:\/\/hill-kleerup.org\/blog\/2009\/07\/22\/if-man-first-walked-on-the-moon-today.html","url_meta":{"origin":12157,"position":5},"title":"If Man first walked on the Moon today","author":"***Dave","date":"Wed 22-Jul-09 7:28am","format":false,"excerpt":"A nice video (via Les, with good commentary) put together by Slate, speculating on what media coverage of the first Moon Landing would have looked like if it were 2009, not 1969. \u00a0 Yeah, I suspect so.\u00a0 While there may be some \"Golden Age of News\" blinders in our memory,\u2026","rel":"","context":"In "Fourth Estate"","block_context":{"text":"Fourth Estate","link":"https:\/\/hill-kleerup.org\/blog\/category\/media\/fourth-estate"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/posts\/12157","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/comments?post=12157"}],"version-history":[{"count":0,"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/posts\/12157\/revisions"}],"wp:attachment":[{"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/media?parent=12157"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/categories?post=12157"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/tags?post=12157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}