{"data":{"id":2405,"lang":"en","title":"Astronomers Confirm Youngest Known Planet, a Jupiter-Sized World Under a Million Years Old","summary":"Elias 2-24 b, a Jupiter-mass planet under 1 million years old, formed far faster and farther out than planet-formation models allow.","category":"science","category_label":"Science","published_at":"2026-09-20T06:01:09Z","updated_at":"2026-09-20T06:01:09Z","url":"https://techtools.cz/tools/news/article/2405-astronomers-confirm-youngest-known-planet-a-jupiter-sized-world-under-a-million","api_url":"https://techtools.cz/news-api/v1/articles/2405?lang=en","markdown_url":"https://techtools.cz/news-api/v1/articles/2405.md?lang=en","image_url":"https://science.nasa.gov/wp-content/uploads/2026/09/elias-00.jpg?w=1536","word_count":160,"reading_time_minutes":1,"sources":[{"url":"https://science.nasa.gov/universe/newfound-baby-planet-smashes-record-for-youngest-known-world/","domain":"science.nasa.gov"},{"url":"https://www.sciencedaily.com/releases/2026/09/260917003712.htm","domain":"sciencedaily.com"}],"translation":{"lang":"cs","id":2478,"title":"Astronomové potvrdili nejmladší známou planetu, obra velikosti Jupiteru mladšího než milion let","url":"https://techtools.cz/tools/news/clanek/2478-astronomove-potvrdili-nejmladsi-znamou-planetu-obra-velikosti-jupiteru-mladsiho","api_url":"https://techtools.cz/news-api/v1/articles/2478?lang=cs"},"content":"A team led by Andrea Bernardi of Chile's Universidad Diego Portales has confirmed Elias 2-24 b as the youngest known planet, less than 1 million years old. Using Keck Observatory coronagraph data, with supporting observations from ALMA and the Very Large Telescope, they found a roughly Jupiter-mass world still forming in the dust and gas disk around its star, about 450 light-years away. The result was published Sept. 16 in The Astrophysical Journal Letters.\n\nThe planet orbits at about 55 times Earth's distance from the Sun, farther than Neptune. Current models say a Jupiter-size planet needs about 5 million years to form at Jupiter's distance, and longer the farther out it sits. Previous record holders were all more than 5 million years old.\n\nTeam member Lucas Cieza said the planet shows that even the best formation models are \"still missing some important processes.\" Astronomers also see it as a rare window on how planetary systems, including our own, take shape."}}