{"id":237766,"date":"2026-05-26T15:21:05","date_gmt":"2026-05-26T20:21:05","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/05\/these-physicists-claim-they-can-send-messages-to-the-past"},"modified":"2026-05-26T15:21:05","modified_gmt":"2026-05-26T20:21:05","slug":"these-physicists-claim-they-can-send-messages-to-the-past","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/05\/these-physicists-claim-they-can-send-messages-to-the-past","title":{"rendered":"These Physicists Claim They Can Send Messages To The Past"},"content":{"rendered":"<p><\/p>\n<p><iframe style=\"display: block; margin: 0 auto; width: 100%; aspect-ratio: 4\/3; object-fit: contain;\" src=\"https:\/\/www.youtube.com\/embed\/RZrHrw1ubqs?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope;\n   picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<p>Take back your personal data with Incogni! Use code Sabine at the link below and get 60% off annual plans: <a href=\"https:\/\/incogni.com\/sabine\">https:\/\/incogni.com\/sabine<\/a>.<\/p>\n<p>When you try to combine quantum physics with Einstein\u2019s theories, you quickly run into some pretty serious problems. The biggest is that causality \u2013 the order in which events occur \u2013 becomes uncertain as the rest of quantum physics. A group of physicists have leveraged that uncertainty, and are now claiming that they can send messages to the past using quantum mechanics. It\u2019s not as crazy as it sounds. Let\u2019s take a look.<\/p>\n<p>Paper: <a href=\"https:\/\/journals.aps.org\/prl\/accepted\">https:\/\/journals.aps.org\/prl\/accepted<\/a>\u2026 mugs, posters and more: \u279c <a href=\"https:\/\/sabines-store.dashery.com\/\">https:\/\/sabines-store.dashery.com\/<\/a> \ud83d\udc8c Support me on Donorbox \u279c <a href=\"https:\/\/donorbox.org\/swtg\">https:\/\/donorbox.org\/swtg<\/a> \ud83d\udc49 Transcript with links to references on Patreon \u279c <img alt=\"\" class=\"\"> \/ sabine \ud83d\udcdd Transcripts and written news on Substack \u279c <a href=\"https:\/\/sciencewtg.substack.com\/\">https:\/\/sciencewtg.substack.com\/<\/a> \ud83d\udce9 Free weekly science newsletter \u279c <a href=\"https:\/\/sabinehossenfelder.com\/newsle\">https:\/\/sabinehossenfelder.com\/newsle<\/a>\u2026 \ud83d\udc42 Audio only podcast \u279c <a href=\"https:\/\/open.spotify.com\/show\/0MkNfXl\">https:\/\/open.spotify.com\/show\/0MkNfXl<\/a>\u2026 \ud83d\udd17 Join this channel to get access to perks \u279c <img alt=\"\" class=\"\"> \/ <a href=\"https:\/\/twitter.com\/sabinehossenfelder\">@sabinehossenfelder<\/a> \ud83d\udcda Buy my book \u279c <a href=\"https:\/\/amzn.to\/3HSAWJW\">https:\/\/amzn.to\/3HSAWJW<\/a> #science #sciencenews #physics #quantum In this video, we examine recent headlines suggesting that sending messages into the past has become easier or even possible, drawing from a theoretical physics paper published in a top journal. While these claims might sound like a time machine is within reach, I clarify that this is a theoretical study and not an actual method for backward time travel. It\u2019s crucial for science communication to distinguish between theoretical possibilities in quantum physics and practical applications.<\/p>\n<p>\ud83d\udc55T-shirts, mugs, posters and more: \u279c <a href=\"https:\/\/sabines-store.dashery.com\/\">https:\/\/sabines-store.dashery.com\/<\/a><br \/> \ud83d\udc8c Support me on Donorbox \u279c <a href=\"https:\/\/donorbox.org\/swtg\">https:\/\/donorbox.org\/swtg<\/a>.<br \/> \ud83d\udc49 Transcript with links to references on Patreon \u279c \/ sabine.<br \/> \ud83d\udcdd Transcripts and written news on Substack \u279c <a href=\"https:\/\/sciencewtg.substack.com\/\">https:\/\/sciencewtg.substack.com\/<\/a><br \/> \ud83d\udce9 Free weekly science newsletter \u279c <a href=\"https:\/\/sabinehossenfelder.com\/newsle\">https:\/\/sabinehossenfelder.com\/newsle<\/a>\u2026<br \/> \ud83d\udc42 Audio only podcast \u279c <a href=\"https:\/\/open.spotify.com\/show\/0MkNfXl\">https:\/\/open.spotify.com\/show\/0MkNfXl<\/a>\u2026<br \/> \ud83d\udd17 Join this channel to get access to perks \u279c<br \/> \/ <a href=\"https:\/\/twitter.com\/sabinehossenfelder\">@sabinehossenfelder<\/a>.<br \/> \ud83d\udcda Buy my book \u279c <a href=\"https:\/\/amzn.to\/3HSAWJW\">https:\/\/amzn.to\/3HSAWJW<\/a><\/p>\n<p>#science #sciencenews #physics #quantum.<br \/> In this video, we examine recent headlines suggesting that sending messages into the past has become easier or even possible, drawing from a theoretical physics paper published in a top journal. While these claims might sound like a time machine is within reach, I clarify that this is a theoretical study and not an actual method for backward time travel. It\u2019s crucial for science communication to distinguish between theoretical possibilities in quantum physics and practical applications.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Take back your personal data with Incogni! Use code Sabine at the link below and get 60% off annual plans: https:\/\/incogni.com\/sabine. When you try to combine quantum physics with Einstein\u2019s theories, you quickly run into some pretty serious problems. The biggest is that causality \u2013 the order in which events occur \u2013 becomes uncertain as [\u2026]<\/p>\n","protected":false},"author":661,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,1617,1515],"tags":[],"class_list":["post-237766","post","type-post","status-publish","format-standard","hentry","category-open-access","category-quantum-physics","category-time-travel"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/237766","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\/661"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=237766"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/237766\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=237766"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=237766"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=237766"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}