{"id":206711,"date":"2025-02-19T05:07:07","date_gmt":"2025-02-19T11:07:07","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2025\/02\/jupiters-moon-callisto-is-very-likely-an-ocean-world"},"modified":"2025-02-19T05:07:07","modified_gmt":"2025-02-19T11:07:07","slug":"jupiters-moon-callisto-is-very-likely-an-ocean-world","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2025\/02\/jupiters-moon-callisto-is-very-likely-an-ocean-world","title":{"rendered":"Jupiter\u2019s moon Callisto is very likely an ocean world"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/jupiters-moon-callisto-is-very-likely-an-ocean-world.jpg\"><\/a><\/p>\n<p>More pocked with craters than any other object in our solar system, Jupiter\u2019s outermost and second-biggest Galilean moon, Callisto, appears geologically unremarkable. In the 1990s, however, NASA\u2019s Galileo spacecraft captured magnetic measurements near Callisto that suggested that its ice shell surface\u2014much like that of Europa, another moon of Jupiter\u2014may encase a salty, liquid water ocean.<\/p>\n<p>But evidence for Callisto\u2019s subsurface ocean has remained inconclusive, as the moon has an intense <a href=\"https:\/\/phys.org\/tags\/ionosphere\/\" rel=\"tag\" class=\"\">ionosphere<\/a>. Scientists thought this electrically conductive upper part of the moon\u2019s atmosphere might imitate the magnetic fingerprint of a salty, conductive ocean.<\/p>\n<p>Now, researchers have revisited the Galileo data in more detail. Unlike in prior studies, this team incorporated all available magnetic measurements from Galileo\u2019s eight close flybys of Callisto. Their expanded analysis much more strongly suggests that Callisto hosts a subsurface ocean.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>More pocked with craters than any other object in our solar system, Jupiter\u2019s outermost and second-biggest Galilean moon, Callisto, appears geologically unremarkable. In the 1990s, however, NASA\u2019s Galileo spacecraft captured magnetic measurements near Callisto that suggested that its ice shell surface\u2014much like that of Europa, another moon of Jupiter\u2014may encase a salty, liquid water ocean. [\u2026]<\/p>\n","protected":false},"author":396,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-206711","post","type-post","status-publish","format-standard","hentry","category-space"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/206711","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=206711"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/206711\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=206711"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=206711"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=206711"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}