{"id":529592,"date":"2026-04-14T02:29:17","date_gmt":"2026-04-14T02:29:17","guid":{"rendered":"https:\/\/www.newsbeep.com\/uk\/529592\/"},"modified":"2026-04-14T02:29:17","modified_gmt":"2026-04-14T02:29:17","slug":"one-of-the-universes-first-stars-was-just-spotted-in-a-neighboring-galaxy-80000-light-years-away-with-almost-no-metals","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/uk\/529592\/","title":{"rendered":"One of the Universe\u2019s First Stars Was Just Spotted in a Neighboring Galaxy 80,000 Light-Years Away With Almost No Metals"},"content":{"rendered":"

For decades, astronomers have hunted for the universe\u2019s oldest surviving stars, treating them as chemical time capsules capable of revealing what the cosmos looked like in its earliest chapters. This latest discovery pushes that search beyond our own galaxy for the first time, opening a new chapter in the study of stellar archaeology.<\/p>\n

The find is not merely symbolic. It provides a concrete, element-by-element record of conditions that existed billions of years ago, at a time when the universe was transitioning from its first short-lived giants to the smaller, longer-lasting stars we see today. The implications reach far beyond a single object.<\/p>\n

A Star That Should Not Exist in This Much Detail<\/p>\n

In the spring of 2025, an international team led by Alexander Ji, a professor at the University of Chicago, identified the star using the SDSS-V sky survey, a program that maps the heavens through millions of spectra. Undergraduate students from the University of Chicago were part of the expedition, helping point the Magellan telescopes toward a short list of candidates. SDSS J0715-7334, located in the halo of the Large Magellanic Cloud at 80,000 light-years from Earth, stood out immediately.<\/p>\n

According to the study published in Nature Astronomy<\/a>, the star belongs to the second generation of stellar objects in the universe. The very first stars, made almost entirely of hydrogen<\/a> and helium, lived brief lives before dying in supernovae that seeded the cosmos with heavier elements. SDSS J0715-7334 carries the chemical fingerprint of one such explosion, making it an extraordinarily rare surviving witness to that era.<\/p>\n

\"RedRed giant SDSS J0915-7334 \u2013 \u00a9 Navid Marvi\/Carnegie Science<\/p>\n

Twice as Metal-Poor as the Previous Record Holder<\/p>\n

In astronomy, \u201cmetals\u201d refers to any element heavier than hydrogen and helium. The more metals a star contains, the more recent its origin. By that measure, SDSS J0715-7334 is strikingly primitive. According to Science et Vie<\/a>, it displays a metal content below 0.005% of what is found in the Sun, twice as low as the previous record-holding star, which was discovered in 2011. In terms of chemical purity, it surpasses by a factor of ten the most primitive galaxies observed by the James Webb Space Telescope<\/a>.<\/p>\n

The spectra gathered from the star reveal traces of aluminum, magnesium, and iron. Notably absent, however, is any trace of carbon. That absence carries significant scientific weight, since carbon normally helps gas clouds contract and collapse to form a star. Its absence here implies a different formation mechanism was at work: tiny grains of dust fulfilled that role instead.<\/p>\n

\"TheThe past orbit of J0715\u22127334 and the LMC in Galactic coordinates on-sky, overlaid on the distribution of all stars observed by Gaia \u2013 \u00a9 Nature Astronomy<\/p>\n

A Rare Window Into How the First Stars Formed<\/p>\n

SDSS J0715-7334 represents only the second known case of a star formed through this dust-driven process. More importantly, it is the first such example found outside the Milky Way. Its chemical signature points to a supernova originating from a star of approximately 30 solar masses, a profile consistent with what astronomers call a Population III star, meaning one of the very first stars ever to exist in the universe.<\/p>\n

\u201cThese primitive stars are windows onto the dawn of stars and galaxies,\u201d Alexander Ji was quoted as saying. The discovery illuminates a pivotal transition in cosmic history, from ephemeral stellar giants to smaller and more durable stars, with dust serving as a key driver of that shift. As the SDSS-V survey continues to expand its coverage, further discoveries of this kind are expected. And while the James Webb Space Telescope peers deep into the distant universe, it cannot resolve individual stars, objects like SDSS J0715-7334 remain, for now, the most precise local archive available for studying the universe\u2019s earliest moments.<\/p>\n","protected":false},"excerpt":{"rendered":"For decades, astronomers have hunted for the universe\u2019s oldest surviving stars, treating them as chemical time capsules capable…\n","protected":false},"author":2,"featured_media":529593,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[90,416,56,54,55],"class_list":{"0":"post-529592","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-space","8":"tag-science","9":"tag-space","10":"tag-uk","11":"tag-united-kingdom","12":"tag-unitedkingdom"},"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts\/529592","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/comments?post=529592"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts\/529592\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/media\/529593"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/media?parent=529592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/categories?post=529592"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/tags?post=529592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}