{"id":14125,"date":"2026-07-23T02:00:17","date_gmt":"2026-07-22T21:00:17","guid":{"rendered":"https:\/\/usnews-14267fa.ingress-comporellon.ewp.live\/?p=14125"},"modified":"2026-07-23T02:00:17","modified_gmt":"2026-07-22T21:00:17","slug":"astronomers-discover-the-first-known-moon-outside-our-solar-system","status":"publish","type":"post","link":"https:\/\/usnews-14267fa.ingress-comporellon.ewp.live\/?p=14125","title":{"rendered":"Astronomers Discover the First Known Moon Outside our Solar System"},"content":{"rendered":"<p><script>\r\n  atOptions = {\r\n    'key' : '644b717812d811d6a1c1fc5b6ccd6fa6',\r\n    'format' : 'iframe',\r\n    'height' : 90,\r\n    'width' : 728,\r\n    'params' : {}\r\n  };\r\n<\/script>\r\n<script src=\"https:\/\/www.highperformanceformat.com\/644b717812d811d6a1c1fc5b6ccd6fa6\/invoke.js\"><\/script>\r\n<br \/>\n<\/p>\n<div data-testid=\"paragraph-content\">\n<div>\n<p data-testid=\"paragraph-element\" class=\"rich-text mb-6 font-graphik text-body-large text-black-coffee mt-8 focus-visible:outline focus-visible:outline-black-coffee focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:shadow-focus-color text-left\">The brown dwarf \u201cplanet\u201d\u2014which orbits the star in the CD-35 2772 solar system\u2014was discovered in 2011 using neither of these methods. Its huge, almost star-like bulk was great enough that astronomers could detect it with an ordinary optical telescope. The exosatellite, however, was a different matter. Even with its Jupiter-like mass it was too small to be seen from 71 light years away. Instead Hoy and his colleagues used the radial velocity method to look for wobbles in the brown dwarf. They spotted them and used the degree of the wobble to calculate the size of the world.<\/p>\n<\/div>\n<p><h2 id=\"what-does-the-discovery-of-an-exomoon-teach-us-about-the-universe\" class=\"scroll-mt-24 font-editorial text-black-coffee text-mobile-h2 lg:scroll-mt-28 lg:text-h2 mb-4\">What does the discovery of an exomoon teach us about the universe?<\/h2>\n<\/p>\n<div>\n<p data-testid=\"paragraph-element\" class=\"rich-text mb-6 font-graphik text-body-large text-black-coffee mt-8 focus-visible:outline focus-visible:outline-black-coffee focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:shadow-focus-color text-left\">\u201cBeing the third wheel in this system makes us want to call it a moon,\u201d said Hoy in a statement that accompanied the release of the study, \u201ceven if it is nothing like the small, rocky moons we have in our system.\u201d<\/p>\n<\/div>\n<div>\n<p data-testid=\"paragraph-element\" class=\"rich-text mb-6 font-graphik text-body-large text-black-coffee mt-8 focus-visible:outline focus-visible:outline-black-coffee focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:shadow-focus-color text-left\">That fact raises the larger question in this discovery, which is essentially one of nomenclature. When is an almost-star actually a planet, and when is a Jupiter-like planet actually a moon? Astronomy typically has neater labels than that, but the CD-35 2772 solar system defies such tidiness.<\/p>\n<\/div>\n<\/div>\n<script async=\"async\" data-cfasync=\"false\" src=\"https:\/\/pl30214220.effectivecpmnetwork.com\/9ab3d4df8a7e1a6171e16ddbf732cc19\/invoke.js\"><\/script>\r\n<div id=\"container-9ab3d4df8a7e1a6171e16ddbf732cc19\"><\/div>\r\n\n","protected":false},"excerpt":{"rendered":"<p>The brown dwarf \u201cplanet\u201d\u2014which orbits the star in the CD-35 2772 solar system\u2014was discovered in 2011 using neither of these methods. Its huge, almost star-like bulk was great enough that astronomers could detect it with an ordinary optical telescope. The exosatellite, however, was a different matter. Even with its Jupiter-like mass it was too small&#8230;<\/p>\n","protected":false},"author":1,"featured_media":14126,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/static.time.com\/v3\/assets\/bltea6093859af6183b\/bltcaa77e612a1807d3\/6a60fcf4a46225aee692124f\/Low-Res_eso2610a.jpg?branch=production&width=1440&quality=75&auto=webp&crop=16:9","fifu_image_alt":"","footnotes":""},"categories":[6],"tags":[],"class_list":["post-14125","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pics-news"],"brizy_media":[],"_links":{"self":[{"href":"https:\/\/usnews-14267fa.ingress-comporellon.ewp.live\/index.php?rest_route=\/wp\/v2\/posts\/14125","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/usnews-14267fa.ingress-comporellon.ewp.live\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/usnews-14267fa.ingress-comporellon.ewp.live\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/usnews-14267fa.ingress-comporellon.ewp.live\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/usnews-14267fa.ingress-comporellon.ewp.live\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=14125"}],"version-history":[{"count":0,"href":"https:\/\/usnews-14267fa.ingress-comporellon.ewp.live\/index.php?rest_route=\/wp\/v2\/posts\/14125\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/usnews-14267fa.ingress-comporellon.ewp.live\/index.php?rest_route=\/wp\/v2\/media\/14126"}],"wp:attachment":[{"href":"https:\/\/usnews-14267fa.ingress-comporellon.ewp.live\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/usnews-14267fa.ingress-comporellon.ewp.live\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/usnews-14267fa.ingress-comporellon.ewp.live\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}