Pub Date : 2025-11-17DOI: 10.1038/s41550-025-02702-8
Joshua Winn
Thirty years after the discovery of 51 Pegasi b — the first planet found around another Sun-like star — astronomers are still grappling with its implications. Hot Jupiters and other planets with unanticipated properties have upended theory and revealed a rich diversity of planetary systems.
{"title":"The discovery of 51 Pegasi b and planets that break the rules","authors":"Joshua Winn","doi":"10.1038/s41550-025-02702-8","DOIUrl":"10.1038/s41550-025-02702-8","url":null,"abstract":"Thirty years after the discovery of 51 Pegasi b — the first planet found around another Sun-like star — astronomers are still grappling with its implications. Hot Jupiters and other planets with unanticipated properties have upended theory and revealed a rich diversity of planetary systems.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"9 11","pages":"1582-1583"},"PeriodicalIF":14.3,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145533742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-17DOI: 10.1038/s41550-025-02703-7
Giada N. Arney
Are we alone in the Universe? Humans have asked this question for as long as our ancestors have stared up at the night sky. Discovering the first possibly Earth-like world has brought us closer to the answer.
{"title":"The discovery of the first Earth cousin and the search for life elsewhere","authors":"Giada N. Arney","doi":"10.1038/s41550-025-02703-7","DOIUrl":"10.1038/s41550-025-02703-7","url":null,"abstract":"Are we alone in the Universe? Humans have asked this question for as long as our ancestors have stared up at the night sky. Discovering the first possibly Earth-like world has brought us closer to the answer.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"9 11","pages":"1586-1587"},"PeriodicalIF":14.3,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145533779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-17DOI: 10.1038/s41550-025-02732-2
Bokyoung Kim
{"title":"Potassium as a probe of the low-metallicity Universe","authors":"Bokyoung Kim","doi":"10.1038/s41550-025-02732-2","DOIUrl":"10.1038/s41550-025-02732-2","url":null,"abstract":"","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"9 11","pages":"1602-1602"},"PeriodicalIF":14.3,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145533746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-17DOI: 10.1038/s41550-025-02734-0
Earlier this month we celebrated the 30th anniversary of the detection of the first planet outside our Solar System orbiting a Sun-like star. This discovery triggered the birth of a field in astronomy that hasn’t stopped growing or producing surprises.
{"title":"From one exoplanet to six thousand","authors":"","doi":"10.1038/s41550-025-02734-0","DOIUrl":"10.1038/s41550-025-02734-0","url":null,"abstract":"Earlier this month we celebrated the 30th anniversary of the detection of the first planet outside our Solar System orbiting a Sun-like star. This discovery triggered the birth of a field in astronomy that hasn’t stopped growing or producing surprises.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"9 11","pages":"1581-1581"},"PeriodicalIF":14.3,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s41550-025-02734-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145533735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-17DOI: 10.1038/s41550-025-02705-5
Paola Pinilla, Myriam Benisty
Since its discovery in 2018, PDS 70 is one of the two youngest known exoplanetary systems, still surrounded by its parental protoplanetary disk — an environment where planet formation can be studied in action and that may mirror the first million years of our own Solar System.
{"title":"The PDS 70 system and in-action planet formation","authors":"Paola Pinilla, Myriam Benisty","doi":"10.1038/s41550-025-02705-5","DOIUrl":"10.1038/s41550-025-02705-5","url":null,"abstract":"Since its discovery in 2018, PDS 70 is one of the two youngest known exoplanetary systems, still surrounded by its parental protoplanetary disk — an environment where planet formation can be studied in action and that may mirror the first million years of our own Solar System.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"9 11","pages":"1590-1591"},"PeriodicalIF":14.3,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145533743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-13DOI: 10.1038/s41550-025-02697-2
Mats Esseldeurs, Leen Decin, Joris De Ridder, Yoshiya Mori, Amanda I. Karakas, Jolien Malfait, Taíssa Danilovich, Stéphane Mathis, Anita M. S. Richards, Raghvendra Sahai, Jeremy Yates, Marie Van de Sande, Maarten Baes, Alain Baudry, Jan Bolte, Thomas Ceulemans, Frederik De Ceuster, Ileyk El Mellah, Sandra Etoka, Carl Gottlieb, Fabrice Herpin, Pierre Kervella, Camille Landri, Louise Marinho, Iain McDonald, Karl Menten, Tom Millar, Zara Osborn, Bannawit Pimpanuwat, John Plane, Daniel J. Price, Lionel Siess, Owen Vermeulen, Ka Tat Wong
Close companions influence stellar evolution through tidal interactions, mass transfer and mass-loss effects. While such companions are detected around young stellar objects, main-sequence stars, red giants and compact objects, direct observational evidence of close-in companions around asymptotic giant branch (AGB) stars has remained elusive. Here we present (sub)millimetre time-domain imaging spectroscopy revealing the Keplerian motion of a close-in companion around the AGB star π1 Gruis. The companion, slightly more massive than the AGB star, is likely a main-sequence star. Unlike more evolved stars with companions at comparable distances, the companion of π1 Gruis follows a circular orbit, suggesting an eccentricity-generating mechanism during the late- or post-AGB phase. Our analysis suggests that model-predicted circularization rates may be underestimated. Our results highlight the potential of multi-epoch (sub)millimetre interferometry in detecting the Keplerian motion of close companions to giant stars and open avenues for our understanding of tidal interaction physics and binary evolution. How do low-mass binaries age? Astronomers have constrained a tight, circular orbit of a close-in companion around a dying giant star, raising new questions about how tidal forces shape binary orbits in the final phases of stellar evolution.
{"title":"Evidence for the Keplerian orbit of a close companion around a giant star","authors":"Mats Esseldeurs, Leen Decin, Joris De Ridder, Yoshiya Mori, Amanda I. Karakas, Jolien Malfait, Taíssa Danilovich, Stéphane Mathis, Anita M. S. Richards, Raghvendra Sahai, Jeremy Yates, Marie Van de Sande, Maarten Baes, Alain Baudry, Jan Bolte, Thomas Ceulemans, Frederik De Ceuster, Ileyk El Mellah, Sandra Etoka, Carl Gottlieb, Fabrice Herpin, Pierre Kervella, Camille Landri, Louise Marinho, Iain McDonald, Karl Menten, Tom Millar, Zara Osborn, Bannawit Pimpanuwat, John Plane, Daniel J. Price, Lionel Siess, Owen Vermeulen, Ka Tat Wong","doi":"10.1038/s41550-025-02697-2","DOIUrl":"10.1038/s41550-025-02697-2","url":null,"abstract":"Close companions influence stellar evolution through tidal interactions, mass transfer and mass-loss effects. While such companions are detected around young stellar objects, main-sequence stars, red giants and compact objects, direct observational evidence of close-in companions around asymptotic giant branch (AGB) stars has remained elusive. Here we present (sub)millimetre time-domain imaging spectroscopy revealing the Keplerian motion of a close-in companion around the AGB star π1 Gruis. The companion, slightly more massive than the AGB star, is likely a main-sequence star. Unlike more evolved stars with companions at comparable distances, the companion of π1 Gruis follows a circular orbit, suggesting an eccentricity-generating mechanism during the late- or post-AGB phase. Our analysis suggests that model-predicted circularization rates may be underestimated. Our results highlight the potential of multi-epoch (sub)millimetre interferometry in detecting the Keplerian motion of close companions to giant stars and open avenues for our understanding of tidal interaction physics and binary evolution. How do low-mass binaries age? Astronomers have constrained a tight, circular orbit of a close-in companion around a dying giant star, raising new questions about how tidal forces shape binary orbits in the final phases of stellar evolution.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"10 1","pages":"124-143"},"PeriodicalIF":14.3,"publicationDate":"2025-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145498176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-07DOI: 10.1038/s41550-025-02707-3
Coordinated observations between the Hubble Space Telescope and ground-based telescopes of a star that is an analogue of the young Sun have uncovered multi-temperature signatures of stellar coronal mass ejections. The detection of fast–warm and slow–cool plasma components suggests a solar-like but more complex picture of stellar eruptions, with impact on the planets around young stars.
{"title":"Warm and cool components found in an eruption from a solar analogue","authors":"","doi":"10.1038/s41550-025-02707-3","DOIUrl":"10.1038/s41550-025-02707-3","url":null,"abstract":"Coordinated observations between the Hubble Space Telescope and ground-based telescopes of a star that is an analogue of the young Sun have uncovered multi-temperature signatures of stellar coronal mass ejections. The detection of fast–warm and slow–cool plasma components suggests a solar-like but more complex picture of stellar eruptions, with impact on the planets around young stars.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"10 1","pages":"18-19"},"PeriodicalIF":14.3,"publicationDate":"2025-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145455686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-07DOI: 10.1038/s41550-025-02708-2
Jonathan O’Callaghan
The Habitable Worlds Observatory will look for inhabited worlds beyond our Solar System in the 2040s and scientists are dreaming of what else it might do.
宜居世界天文台将在21世纪40年代寻找太阳系外的宜居世界，科学家们正在梦想着它还能做些什么。
{"title":"NASA’s bold new telescope will do more than just hunt for life","authors":"Jonathan O’Callaghan","doi":"10.1038/s41550-025-02708-2","DOIUrl":"10.1038/s41550-025-02708-2","url":null,"abstract":"The Habitable Worlds Observatory will look for inhabited worlds beyond our Solar System in the 2040s and scientists are dreaming of what else it might do.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"9 11","pages":"1594-1597"},"PeriodicalIF":14.3,"publicationDate":"2025-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145461895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：