{"id":55122,"date":"2026-02-15T21:39:23","date_gmt":"2026-02-15T21:39:23","guid":{"rendered":"https:\/\/bis-space.com\/shop\/product\/estimating-the-maximum-lifetime-of-alien-civilizations-consistent-with-the-fermi-paradox-and-ours-as-well\/"},"modified":"2026-02-16T00:02:47","modified_gmt":"2026-02-16T00:02:47","slug":"jbis-078-07-0253","status":"publish","type":"product","link":"https:\/\/bis-space.com\/shop\/product\/jbis-078-07-0253\/","title":{"rendered":"Estimating the Maximum Lifetime of Alien Civilizations Consistent With the Fermi Paradox; and Ours As Well"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<p class=\"p2\"><b>Robert de Saro<\/b><\/p>\n<p>jbis-078-07-0253<\/p>\n<p class=\"p1\"><b>DOI <a href=\"https:\/\/doi.org\/10.59332\/jbis-078-07-0253\">https:\/\/doi.org\/10.59332\/jbis-078-07-0253<\/a><\/b><\/p>\n<p class=\"p2\">The Fermi Paradox states that technologically-advanced extraterrestrial aliens should be widespread given the universe&#8217;s age, yet none have been observed. There are three possible explanations: 1) technologically advanced aliens don&#8217;t exist (besides us) 2) they exist but collapse before they can be detected, or 3) they reach an advanced technological level<br \/>\nbeyond our detection capabilities. This paper deals with the second and third possibilities and places an upper limit on their technological lifetimes consistent with the Fermi Paradox. The absence of artificial extraterrestrial radiation is the starting point. Using SETI&#8217;s radiation detection limit, radiation&#8217;s distance attenuation, and the maximum power heat dissipation the aliens would tolerate; allows a distance to be determined beyond which it would be impossible to detect aliens&#8217; radiation. Since time and distance are equivalent for radiation, this also places an upper limit on their technological lifetimes within the assumptions made. Under ideal conditions, aliens would last from 500 years to 1,300 years before either collapsing or advancing to a higher and undetectable technological level. Further, a fundamental law of nature must exist to explain the complete absence of alien signals. Most importantly, using a more reasonable non-ideal energy conversion efficiency shows we may only have 50 to 300 years left before we reach a tipping point and either collapse or ascend.<\/p>\n<p class=\"p2\"><b>Keywords: <\/b>Fermi Paradox, Artificial Radiation, Detection Limits, Extraterrestrial Aliens<\/p>\n","protected":false},"featured_media":54677,"template":"","meta":[],"pwb-brand":[],"product_brand":[],"product_cat":[56,59,3901],"product_tag":[],"class_list":["post-55122","product","type-product","status-publish","has-post-thumbnail","product_cat-journal-of-the-bis","product_cat-papers","product_cat-2025-papers","first","instock","downloadable","virtual","purchasable","product-type-simple","czr-hentry"],"jetpack_sharing_enabled":true,"brands":[],"_links":{"self":[{"href":"https:\/\/bis-space.com\/shop\/wp-json\/wp\/v2\/product\/55122","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bis-space.com\/shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/bis-space.com\/shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bis-space.com\/shop\/wp-json\/wp\/v2\/media\/54677"}],"wp:attachment":[{"href":"https:\/\/bis-space.com\/shop\/wp-json\/wp\/v2\/media?parent=55122"}],"wp:term":[{"taxonomy":"pwb-brand","embeddable":true,"href":"https:\/\/bis-space.com\/shop\/wp-json\/wp\/v2\/pwb-brand?post=55122"},{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/bis-space.com\/shop\/wp-json\/wp\/v2\/product_brand?post=55122"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/bis-space.com\/shop\/wp-json\/wp\/v2\/product_cat?post=55122"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/bis-space.com\/shop\/wp-json\/wp\/v2\/product_tag?post=55122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}