{"id":244422,"date":"2026-09-23T05:04:34","date_gmt":"2026-09-23T10:04:34","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/09\/largest-dataset-of-its-kind-could-clarify-how-massive-stars-shaped-early-galaxies"},"modified":"2026-09-23T05:04:34","modified_gmt":"2026-09-23T10:04:34","slug":"largest-dataset-of-its-kind-could-clarify-how-massive-stars-shaped-early-galaxies","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/09\/largest-dataset-of-its-kind-could-clarify-how-massive-stars-shaped-early-galaxies","title":{"rendered":"Largest dataset of its kind could clarify how massive stars shaped early galaxies"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/largest-dataset-of-its-kind-could-clarify-how-massive-stars-shaped-early-galaxies.jpg\"><\/a><\/p>\n<p>The more astronomers learn about the universe\u2019s earliest galaxies, the stranger they seem. Many of their surprising properties may be explained by differences between their massive stars and those in galaxies like our own Milky Way. A new University of Utah-led survey with the Hubble Space Telescope is shedding light on the stellar astrophysics operating in early galaxies.<\/p>\n<p>The survey, called the Treasury of Extremely Metal-Poor O Stars (<a href=\"https:\/\/archive.stsci.edu\/hlsp\/tempos\/\" target=\"_blank\">TEMPOS<\/a>), uses ultraviolet (UV) observations from Hubble\u2019s Cosmic Origins Spectrograph (COS) to study massive stars in nearby galaxies that are the best available analogs of stars in the early universe.<\/p>\n<p>The unprecedentedly large dataset from TEMPOS could help astronomers build better models of massive stars to understand how they shaped galaxies when the universe was young. Such models are essential to interpret observations of early galaxies now coming from the James Webb Space Telescope, which launched in 2021.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The more astronomers learn about the universe\u2019s earliest galaxies, the stranger they seem. Many of their surprising properties may be explained by differences between their massive stars and those in galaxies like our own Milky Way. A new University of Utah-led survey with the Hubble Space Telescope is shedding light on the stellar astrophysics operating [\u2026]<\/p>\n","protected":false},"author":662,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[219,8],"tags":[],"class_list":["post-244422","post","type-post","status-publish","format-standard","hentry","category-physics","category-space"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/244422","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\/662"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=244422"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/244422\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=244422"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=244422"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=244422"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}