{"id":13908,"date":"2025-04-05T10:00:00","date_gmt":"2025-04-05T10:00:00","guid":{"rendered":"https:\/\/modernsciences.org\/staging\/4414\/?p=13908"},"modified":"2025-03-29T06:47:04","modified_gmt":"2025-03-29T06:47:04","slug":"measuring-true-scale-universe-part-1-april-2025","status":"publish","type":"post","link":"https:\/\/modernsciences.org\/staging\/4414\/measuring-true-scale-universe-part-1-april-2025\/","title":{"rendered":"Measuring the True Scale of the Universe, Part 1"},"content":{"rendered":"\n<figure class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Terence Tao on how we measure the cosmos | The Distance Ladder Part 1\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/YdOXS_9_P4U?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"\">Starting with Eratosthenes&#8217; clever calculation of Earth&#8217;s circumference using shadows and wells, early astronomers used geometric reasoning and eclipses to estimate distances to the Moon and Sun\u2014even without modern instruments.<\/p>\n\n\n\n<p class=\"\"><\/p>\n","protected":false},"excerpt":{"rendered":"Starting with Eratosthenes&#8217; clever calculation of Earth&#8217;s circumference using shadows and wells, early astronomers used geometric reasoning and&hellip;\n","protected":false},"author":4,"featured_media":13910,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"video","meta":{"nf_dc_page":"","fifu_image_url":"https:\/\/images.pexels.com\/photos\/87009\/earth-soil-creep-moon-lunar-surface-87009.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=2","fifu_image_alt":"","footnotes":""},"categories":[17,14],"tags":[283,6814,6821,6813,6809,6819,6808,6804,6820,6810,6806,6823,6805,6817,6815,6807,6816,6818,6812,6822,6811,189],"class_list":{"0":"post-13908","1":"post","2":"type-post","3":"status-publish","4":"format-video","5":"has-post-thumbnail","7":"category-math-and-the-sciences","8":"category-space","9":"tag-3blue1brown","10":"tag-ancient-astronomy-measurements","11":"tag-ancient-science-and-geometry","12":"tag-astronomical-distance-ratios","13":"tag-celestial-measurement-techniques","14":"tag-copernican-orbital-periods","15":"tag-cosmic-distance-ladder","16":"tag-distance-to-moon-and-sun","17":"tag-early-solar-system-models","18":"tag-early-universe-calculations","19":"tag-eratosthenes-earth-circumference","20":"tag-evolution-of-space-measurement","21":"tag-geometric-reasoning-astronomy","22":"tag-history-of-astronomy","23":"tag-history-of-cosmic-measurements","24":"tag-kepler-elliptical-orbits","25":"tag-measuring-universe-scale","26":"tag-moon-phase-distance-method","27":"tag-stellar-parallax-foundation","28":"tag-sun-position-estimation","29":"tag-tycho-brahe-observations","30":"tag-youtube","31":"post_format-post-format-video","32":"cs-entry","33":"cs-video-wrap"},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/13908","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/comments?post=13908"}],"version-history":[{"count":1,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/13908\/revisions"}],"predecessor-version":[{"id":13909,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/13908\/revisions\/13909"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/media\/13910"}],"wp:attachment":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/media?parent=13908"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/categories?post=13908"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/tags?post=13908"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}