{"id":85331,"date":"2018-11-30T16:43:25","date_gmt":"2018-12-01T00:43:25","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2018\/11\/astronomers-measure-total-starlight-emitted-over-13-7bn-years"},"modified":"2018-11-30T16:43:25","modified_gmt":"2018-12-01T00:43:25","slug":"astronomers-measure-total-starlight-emitted-over-13-7bn-years","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2018\/11\/astronomers-measure-total-starlight-emitted-over-13-7bn-years","title":{"rendered":"Astronomers measure total starlight emitted over 13.7bn years"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/astronomers-measure-total-starlight-emitted-over-13-7bn-years.jpg\"><\/a><\/p>\n<p>The first stars flickered into being a few hundred million years after the big bang. Since then, galaxies have churned out stars at a stupendous rate, and scientists estimate there were now about a trillion trillion.<\/p>\n<p>In total, the astronomers estimate, stars have radiated 4\u00d710<sup>84<\/sup> photons (a photon being the smallest unit of light). Or put another way: 4,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 photons.<\/p>\n<p>The astronomers based their calculation on measurements of the extragalactic background light (EBL), a cosmic fog of radiation that has been accumulating since stars first illuminated the dark, vast expanse of space.<\/p>\n<p><!-- Link: <a href=\"https:\/\/www.theguardian.com\/science\/2018\/nov\/29\/astronomers-measure-total-starlight-emitted-over-13-billion-years\">https:\/\/www.theguardian.com\/science\/2018\/nov\/29\/astronomers-...lion-years<\/a> --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The first stars flickered into being a few hundred million years after the big bang. Since then, galaxies have churned out stars at a stupendous rate, and scientists estimate there were now about a trillion trillion. In total, the astronomers estimate, stars have radiated 4\u00d71084 photons (a photon being the smallest unit of light). Or [\u2026]<\/p>\n","protected":false},"author":396,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33],"tags":[],"class_list":["post-85331","post","type-post","status-publish","format-standard","hentry","category-cosmology"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/85331","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=85331"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/85331\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=85331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=85331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=85331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}