{"id":242385,"date":"2026-08-08T02:19:35","date_gmt":"2026-08-08T07:19:35","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/08\/nuclear-reactors-keep-emitting-a-hidden-signal-long-after-they-shut-down"},"modified":"2026-08-08T02:19:35","modified_gmt":"2026-08-08T07:19:35","slug":"nuclear-reactors-keep-emitting-a-hidden-signal-long-after-they-shut-down","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/08\/nuclear-reactors-keep-emitting-a-hidden-signal-long-after-they-shut-down","title":{"rendered":"Nuclear Reactors Keep Emitting a Hidden Signal Long After They Shut Down"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/nuclear-reactors-keep-emitting-a-hidden-signal-long-after-they-shut-down2.jpg\"><\/a><\/p>\n<p><strong>Long after a nuclear reactor goes dark, its radioactive fuel continues to whisper through matter, leaving behind a hidden signal that scientists have detected for the first time.<\/strong><\/p>\n<p>Turning off a nuclear reactor stops the chain reaction, but it does not make the reactor completely quiet. Long after the core goes dark, radioactive fragments left behind by fission continue to decay, releasing a faint stream of nearly undetectable particles known as antineutrinos.<\/p>\n<p>Now, scientists have measured that lingering signal directly for the first time. Using the Double Chooz experiment in France, researchers detected antineutrinos emitted after two nuclear reactors had been shut down, revealing the subtle particle \u201cafterglow\u201d produced by partially used fuel in the cores and spent fuel stored nearby.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Long after a nuclear reactor goes dark, its radioactive fuel continues to whisper through matter, leaving behind a hidden signal that scientists have detected for the first time. Turning off a nuclear reactor stops the chain reaction, but it does not make the reactor completely quiet. Long after the core goes dark, radioactive fragments left [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[873,48],"tags":[],"class_list":["post-242385","post","type-post","status-publish","format-standard","hentry","category-nuclear-energy","category-particle-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/242385","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\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=242385"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/242385\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=242385"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=242385"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=242385"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}