{"id":208441,"date":"2025-03-12T07:27:35","date_gmt":"2025-03-12T12:27:35","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2025\/03\/what-is-faster-the-speed-of-light-or-the-speed-the-universe-is-expanding"},"modified":"2025-03-12T07:27:35","modified_gmt":"2025-03-12T12:27:35","slug":"what-is-faster-the-speed-of-light-or-the-speed-the-universe-is-expanding","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2025\/03\/what-is-faster-the-speed-of-light-or-the-speed-the-universe-is-expanding","title":{"rendered":"What is faster, the speed of light or the speed the universe is expanding"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/what-is-faster-the-speed-of-light-or-the-speed-the-universe-is-expanding2.jpg\"><\/a><\/p>\n<p>Even light-speed signals can\u2019t reach galaxies beyond 18 billion light-years due to space expanding too fast.<\/p>\n<p><b>TL;DR<\/b><\/p>\n<p>In an expanding Universe, galaxies beyond 18 billion light-years are unreachable, even if we send a light-speed signal today. The expansion of space, not objects themselves, causes these galaxies to appear as though they\u2019re moving faster than light. As space expands, light is stretched, a process called redshift, making galaxies seem to accelerate away from us. This phenomenon doesn\u2019t break the laws of relativity since space itself isn\u2019t bound by the speed of light. The farther we look, the more we realize that many galaxies will remain beyond our reach forever.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Even light-speed signals can\u2019t reach galaxies beyond 18 billion light-years due to space expanding too fast. TL;DR In an expanding Universe, galaxies beyond 18 billion light-years are unreachable, even if we send a light-speed signal today. The expansion of space, not objects themselves, causes these galaxies to appear as though they\u2019re moving faster than light. [\u2026]<\/p>\n","protected":false},"author":662,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-208441","post","type-post","status-publish","format-standard","hentry","category-space"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/208441","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\/662"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=208441"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/208441\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=208441"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=208441"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=208441"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}