{"data":{"id":1725,"lang":"en","title":"Astronomers Find Ross 318 b, a Temperate Super-Earth in the Habitable Zone of a Red Dwarf Just 28 Light-Years Away","summary":"Astronomers detected Ross 318 b, a roughly 6-Earth-mass super-Earth in the habitable zone of a red dwarf just 28 light-years away, a prime target for JWST atmospheric studies.","category":"science","category_label":"Science","published_at":"2026-05-27T22:01:15Z","updated_at":"2026-05-27T22:01:15Z","url":"https://techtools.cz/tools/news/article/1725-astronomers-find-ross-318-b-a-temperate-super-earth-in-the-habitable-zone-of-a","api_url":"https://techtools.cz/news-api/v1/articles/1725?lang=en","markdown_url":"https://techtools.cz/news-api/v1/articles/1725.md?lang=en","image_url":"https://scx1.b-cdn.net/csz/news/800a/2026/astronomers-discover-a-5.jpg","word_count":165,"reading_time_minutes":1,"sources":[{"url":"https://phys.org/news/2026-05-astronomers-super-earth-orbiting-nearby.html","domain":"phys.org"},{"url":"https://arxiv.org/abs/2605.11123","domain":"arxiv.org"}],"translation":{"lang":"cs","id":1798,"title":"Astronomové objevili Ross 318 b, mírnou super-Zemi v obyvatelné zóně červeného trpaslíka vzdáleného jen 28 světelných let","url":"https://techtools.cz/tools/news/clanek/1798-astronomove-objevili-ross-318-b-mirnou-super-zemi-v-obyvatelne-zone-cerveneho","api_url":"https://techtools.cz/news-api/v1/articles/1798?lang=cs"},"content":"A team led by Giuseppe Conzo of Italy's Gruppo Astrofili Palidoro, working with collaborators in Italy and Brazil, has detected a new exoplanet orbiting the nearby red dwarf Ross 318 (also known as Gliese 48), located just 28 light-years from Earth. The discovery was reported on May 11, 2026, on the arXiv preprint server.\n\nThe planet, Ross 318 b, has a minimum mass of about 6.2 times that of Earth and circles its star every 39.6 days at roughly 0.16 AU. It receives about 58% of the sunlight Earth gets, giving it an equilibrium temperature near 237 K and placing it squarely in the star's conservative habitable zone. Researchers estimate a radius around 1.74 times Earth's.\n\nIts mass suggests Ross 318 b could hold a substantial atmosphere able to redistribute heat from its day side to its likely tidally locked night side. That makes it one of the most promising temperate super-Earths for follow-up atmospheric study, including transmission spectroscopy with the James Webb Space Telescope."}}