{"id":523,"date":"2026-08-03T16:32:48","date_gmt":"2026-08-03T16:32:48","guid":{"rendered":"https:\/\/thirstier.news\/?p=523"},"modified":"2026-08-03T16:32:48","modified_gmt":"2026-08-03T16:32:48","slug":"nasas-juno-peers-beneath-ios-surface","status":"publish","type":"post","link":"https:\/\/thirstier.news\/?p=523","title":{"rendered":"NASA\u2019s Juno Peers Beneath Io\u2019s Surface"},"content":{"rendered":"<section class=\"p-0\">\n<div class=\"grid-container grid-row grid-container-block padding-0\">\n<div class=\"desktop:grid-col-3 desktop:padding-right-5 desktop:padding-left-3 padding-top-3\">\n<div class=\"publish-date meta-item grid-row flex-align-center border-bottom padding-y-2\"><time class=\"\">07\/22\/2026<\/time><\/div>\n<\/div>\n<div class=\"desktop:grid-col-9 desktop:padding-left-9 desktop:padding-right-3 desktop:padding-top-3 usa-article-content\">\n<div class=\"entry-content\">\n<div id=\"\" class=\"hds-module wp-block-smd-block-post-meta\">\n<div class=\"CustomFields hds-module\">\n<div class=\"CustomFields hds-media \">\n<div id=\"\" class=\"hds-featured-file-list bg-spacesuit-white padding-x-2 tablet:padding-x-3 desktop:padding-x-4 padding-y-5 desktop:padding-y-6 hds-module align wp-block-nasa-blocks-file-list\">\n<div class=\"grid-container grid-container-block padding-0\">\n<div class=\"grid-row width-full margin-bottom-4\">\n<div class=\"grid-col-12 desktop:grid-col-6 margin-bottom-2 desktop:margin-bottom-0\">\n<h2 class=\"heading-22\">\n\t\t\t\t\tDownloads\t\t\t\t<\/h2>\n<\/p><\/div>\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<div class=\"desktop:grid-col display-flex flex-align-center desktop:flex-justify-end\">\n\t\t\t\t\t\t\t\t\t<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"hds-list-row hds-file-list-row\">\n<div class=\"hds-list-thumbnail hds-file-list-thumbnail\">\n<div class=\"hds-list-thumbnail-inner hds-file-list-thumbnail-inner hds-cover-wrapper\">\n<figure class=\"hds-media-background  \"><\/figure>\n<\/div><\/div>\n<div class=\"hds-list-details\">\n<div class=\"hds-list-name hds-file-list-name\">\n<h2 class=\"heading-22\">NASA\u2019s Juno Peers Beneath Io\u2019s Surface<\/h2>\n<\/p><\/div>\n<div class=\"hds-list-meta\">\n<div class=\"hds-list-meta-item hds-list-date hds-file-list-date\">\n<p class=\"p-sm\">\n<\/p><\/div>\n<div class=\"hds-list-meta-item hds-file-list-filetype\">\n<p class=\"p-sm\">PNG (2.07 MB)<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"hds-list-cta hds-file-list-download\">\n\t\t\t\t\t<a aria-label=\"Download NASA\u2019s Juno Peers Beneath Io\u2019s Surface\" href=\"https:\/\/assets.science.nasa.gov\/content\/dam\/science\/psd\/photojournal\/pia\/pia26\/pia26756\/PIA26756.png\" target=\"_blank\" download><\/p>\n<p>\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p class=\"wp-block-paragraph\">This map represents data captured by the Microwave Radiometer (MWR) aboard NASA\u2019s Juno spacecraft, indicating heat rising from just beneath the surface of Jupiter\u2019s moon Io. While infrared instruments measure the temperature of the moon\u2019s surface, the lowest frequency microwave channels (0.6 and 1.25 gigahertz) on the MWR can penetrate between about 6 and 20 feet (2 and 6 meters) into the crust. The colors on this map illustrate a distinct temperature gradient across the moon, with the most extreme, localized heat output in red.\u00a0<\/p>\n<p class=\"wp-block-paragraph\">The most prominent red anomaly in the upper left (between 60 and 120 degrees west longitude) reveals subsurface temperatures 18 to 36 degrees Fahrenheit (10 to 20 degrees Celsius, or 10 to 20 Kelvin)\u00a0\u00a0warmer than the surrounding area. This massive regional heat source coincides with the Zal Montes Patera complex, an area where Juno\u2019s Stellar Reference Unit observed an\u00a0<a href=\"https:\/\/science.nasa.gov\/photojournal\/nasas-juno-peers-beneath-ios-surface\/mailto:https:\/science.nasa.gov\/photojournal\/nasas-juno-sees-glowing-lava-on-io\">active lava flow<\/a>. A second major subsurface heat source is also visible near the equator, stretching from 0 to 50 degrees west longitude. Together, these distinct microwave anomalies indicate significant internal heating occurring within the upper tens of meters of Io\u2019s crust.\u00a0<\/p>\n<p class=\"wp-block-paragraph\">Contrasting with these intense hot spots are the yellow and green regions, which reflect temperatures more common across the moon. The yellow areas represent intermediate temperatures that naturally warm up to near -190\u00b0F (-123\u00b0C, or 150 Kelvin) as they approach the equator. Meanwhile, the green areas, primarily visible toward the higher northern latitudes, indicate the coolest subsurface temperatures, dropping to around -298\u00b0F (-183\u00b0C, or 90 Kelvin) near the pole.<\/p>\n<p class=\"wp-block-paragraph\">NASA\u2019s Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Juno mission for the principal investigator, Scott Bolton, of the Southwest Research Institute in San Antonio. Juno is part of NASA\u2019s New Frontiers Program, which is managed at NASA\u2019s Marshall Space Flight Center in Huntsville, Alabama, for the agency\u2019s Science Mission Directorate in Washington.\u00a0The MWR was built by JPL.\u00a0Lockheed Martin Space in Denver built and operates the spacecraft.<\/p>\n<p class=\"wp-block-paragraph\">More information about Juno is at:\u00a0<a href=\"http:\/\/www.nasa.gov\/juno\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/www.nasa.gov\/juno<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"\" class=\"hds-topic-cards nasa-gb-align-full maxw-full width-full padding-y-6 padding-x-3 color-mode-dark hds-module hds-module-full alignfull wp-block-nasa-blocks-topic-cards\">\n<div class=\"grid-container grid-container-block-lg padding-x-0\">\n<div class=\"grid-row flex-align-center margin-bottom-3\">\n<div class=\"desktop:grid-col-8 margin-bottom-2 desktop:margin-bottom-0\">\n<div class=\"label color-carbon-60 margin-bottom-2\">Keep Exploring<\/div>\n<h2 class=\"heading-36 line-height-sm\">Discover More Topics From Photojournal<\/h2>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"grid-row grid-gap-2 hds-topic-cards-wrapper\">\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/photojournal\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<figure class=\"hds-media-background  \"><\/figure>\n<\/p><\/div>\n<p>\t\t\t<\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/photojournal\/search\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<figure class=\"hds-media-background  \"><\/figure>\n<\/p><\/div>\n<p>\t\t\t<\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/photojournal\/latest\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<figure class=\"hds-media-background  \"><\/figure>\n<\/p><\/div>\n<p>\t\t\t<\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/photojournal\/feedback\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<figure class=\"hds-media-background  \"><\/figure>\n<\/p><\/div>\n<p>\t\t\t<\/a>\n\t\t\t\t<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"edit-post-link\"><\/div>\n<\/section>\n<hr>\n<p class=\"tni-attribution\">Source: <a href=\"https:\/\/science.nasa.gov\/photojournal\/nasas-juno-peers-beneath-ios-surface\/\" rel=\"nofollow noopener\">NASA Science<\/a><\/p>\n<p>Source: <a href=\"https:\/\/science.nasa.gov\/photojournal\/nasas-juno-peers-beneath-ios-surface\/\">NASA Science<\/a>. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Description This map represents data captured by the Microwave Radiometer (MWR) aboard NASA\u2019s Juno spacecraft, indicating heat rising from just beneath the surface of Jupiter\u2019s moon Io. While infrared instruments measure the temperature of the moon\u2019s surface, the lowest frequency microwave channels (0.6 and 1.25 gigahertz) on the MWR can penetrate between about 6 and&hellip;<\/p>\n","protected":false},"author":1,"featured_media":268,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-523","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science-space-nasa-photos-visual-records"],"_links":{"self":[{"href":"https:\/\/thirstier.news\/index.php?rest_route=\/wp\/v2\/posts\/523","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thirstier.news\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/thirstier.news\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/thirstier.news\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/thirstier.news\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=523"}],"version-history":[{"count":1,"href":"https:\/\/thirstier.news\/index.php?rest_route=\/wp\/v2\/posts\/523\/revisions"}],"predecessor-version":[{"id":694,"href":"https:\/\/thirstier.news\/index.php?rest_route=\/wp\/v2\/posts\/523\/revisions\/694"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/thirstier.news\/index.php?rest_route=\/wp\/v2\/media\/268"}],"wp:attachment":[{"href":"https:\/\/thirstier.news\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/thirstier.news\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=523"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/thirstier.news\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}