{"id":82445,"date":"2018-09-09T19:42:24","date_gmt":"2018-09-10T02:42:24","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2018\/09\/cosmic-uncertainty-is-the-speed-of-light-really-constant"},"modified":"2018-09-09T19:42:24","modified_gmt":"2018-09-10T02:42:24","slug":"cosmic-uncertainty-is-the-speed-of-light-really-constant","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2018\/09\/cosmic-uncertainty-is-the-speed-of-light-really-constant","title":{"rendered":"Cosmic uncertainty: Is the speed of light really constant?"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/cosmic-uncertainty-is-the-speed-of-light-really-constant.jpg\"><\/a><\/p>\n<p>The universe\u2019s ultimate speed limit seems set in stone. But there\u2019s good reason to believe it might once have been faster \u2013 and may still be changing now.<\/p>\n<p>By Stuart Clark<\/p>\n<p>The speed of light in a vacuum is the ultimate cosmic speed limit. Just getting close to it causes problems: the <a href=\"https:\/\/www.newscientist.com\/article\/mg22429991-400-how-to-think-about-relativity\/\">weird distortions of Einstein\u2019s relativity kick in<\/a>, so time slows down, lengths go up, masses balloon and everything you thought was fixed changes. Only things that have no mass in the first place can reach light speed \u2013 photons of light being the classic example. Absolutely nothing can exceed this cosmic max.<\/p>\n<p><!-- Link: <a href=\"https:\/\/www.newscientist.com\/article\/mg23331150-200-cosmic-uncertainty-is-the-speed-of-light-really-constant\/\">https:\/\/www.newscientist.com\/article\/mg23331150&#45;200-cosm...-constant\/<\/a> --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The universe\u2019s ultimate speed limit seems set in stone. But there\u2019s good reason to believe it might once have been faster \u2013 and may still be changing now. By Stuart Clark The speed of light in a vacuum is the ultimate cosmic speed limit. Just getting close to it causes problems: the weird distortions of [\u2026]<\/p>\n","protected":false},"author":396,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-82445","post","type-post","status-publish","format-standard","hentry","category-futurism"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/82445","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/396"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=82445"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/82445\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=82445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=82445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=82445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}