{"id":215532,"date":"2025-06-06T17:12:23","date_gmt":"2025-06-06T22:12:23","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2025\/06\/webb-telescope-detects-water-vapor-on-a-planet-outside-the-solar-system-smaller-than-neptune"},"modified":"2025-06-06T17:12:23","modified_gmt":"2025-06-06T22:12:23","slug":"webb-telescope-detects-water-vapor-on-a-planet-outside-the-solar-system-smaller-than-neptune","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2025\/06\/webb-telescope-detects-water-vapor-on-a-planet-outside-the-solar-system-smaller-than-neptune","title":{"rendered":"Webb telescope detects water vapor on a planet outside the solar system smaller than Neptune"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/webb-telescope-detects-water-vapor-on-a-planet-outside-the-solar-system-smaller-than-neptune.jpg\"><\/a><\/p>\n<p>Many of these smaller worlds are shrouded in haze, but this one seems to have clear skies and to be unusually hot.<\/p>\n<p>TOI-421 B sits several times closer to its star than earth does to the sun. <a href=\"https:\/\/science.nasa.gov\/exoplanet-catalog\/toi-421-b\/\" target=\"_blank\" rel=\"noreferrer noopener\">The planet\u2019s atmosphere<\/a> reaches around 1,340\u00b0F, which is intense even by exoplanet standards.<\/p>\n<p>Astronomers using the <a href=\"https:\/\/science.nasa.gov\/mission\/webb\/\" target=\"_blank\" rel=\"noreferrer noopener\">Webb Telescope<\/a> used a method known as <a href=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2023\/03\/Transmission_spectroscopy\" target=\"_blank\" rel=\"noreferrer noopener\">transmission spectroscopy<\/a> to spot water in the planet\u2019s upper layers.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Many of these smaller worlds are shrouded in haze, but this one seems to have clear skies and to be unusually hot. TOI-421 B sits several times closer to its star than earth does to the sun. The planet\u2019s atmosphere reaches around 1,340\u00b0F, which is intense even by exoplanet standards. Astronomers using the Webb Telescope [\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-215532","post","type-post","status-publish","format-standard","hentry","category-space"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/215532","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=215532"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/215532\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=215532"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=215532"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=215532"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}