# Union Astronòmica Internassional

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|  | **Vos an lenga piemontèisa** |
| Për amprende a dovré 'l sistema dle parlà locaj ch'a varda sì. |

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L'**Union astronòmica internassional** (**UAI**, o dcò **IAU** da l'anglèis e d'àutre lenghe) a uniss le sossietà astronòmiche dël mond; a l'é 'n mèmber dël Consèj Internassional për la Siensa. A l'é l'autorità arconossùa për deje ël nòm a le stèile, ij pianeta, j'asteròid e d'àutri còrp celest. Sò ufissi prinsipal a l'é a Paris, an Fransa. L'UAI a l'ha 'dcò 'l ròl ëd gestì ij comunicà UAI ch'a aviso j'astrònom sij fenòmen improvis.
L'UAI a l'é stàita fondà dël 1919 'me union ëd vàire proget internassionaj, dont la *Carte du Ciel*, l'*Unione solare* e l'*International Time Bureau*. Sò prim pressident a l'é stàit Benjamin Baillaud.
Comission
Evenimnt organisà da l'UAI dël 2009 a Praga
Ciambrea dl'UAI dël 2006
L'UAI së spartiss an 40 grup ëd travaj specialisà ant ij diferent setor dont as òcupa l'asociassion. Ij 40 grup a son arcujì an 12 division.

| Division | Soget |
| --- | --- |
| I | Astronomìa fondamental |
| II | Ël Sol e l'eliosfera |
| III | Siense dij Sistema planetari |
| IV | Le stèile |
| V | Le stèile cangiante |
| VI | La materia intersteilar |
| VII | La Stra ëd San Giaco |
| VIII | Le galassie e l’univers |
| IX | Técniche òtiche e infraross |
| X | Radioastronomìa |
| XI | Astrofìsica dj'àute energìe e dle técniche spassiaj |
| XII | Atività comun-e ëd tute le comission |

Ciambree generaj
Dal 1922 as fa na ciambrea general dl'UAI minca tre agn, gavà 'l perìod ëd guèra dal 1940 al 1945.
Ij pais partissipant

**Ciambree Generaj dla UAI**| N° |  Ann  | Sità | Nassion |
| --- | --- | --- | --- |
| I | 1922 | Roma | Italia |
| II | 1925 | Cambridge | Regn Unì |
| III | 1928 | Lèida | Pais Bass |
| IV | 1932 | Cambridge | Stat Unì |
| V | 1935 | Paris |  Fransa |
| VI | 1938 | Stocòlma | Svessia |
| VII | 1948 | Zurigh | Svìssera |
| VIII | 1952 | Roma | Italia |
| IX | 1955 | Dublin | Irlanda |
| X | 1958 | Mosca | Union Soviética |
| XI | 1961 | Berkeley | Stat Unì |
| XII | 1964 | Amborgh | Almagna |
| XIII | 1967 | Praga | Cecoslovachia |
| XIV | 1970 | Brighton | Regn Unì |
| XV | 1973 | Sydney | Australia |
| XVI | 1976 | Grenoble |  Fransa |
| XVII | 1979 | Montréal | Canadà |
| XVIII | 1982 | Patrass | Grecia |
| XIX | 1985 | New Delhi | India |
| XX | 1988 | Baltimòra | Stat Unì |
| XXI | 1991 | Buenos Aires  | Argentin-a |
| XXII | 1994 | L'Aja | Pais Bass |
| XXIII | 1997 | Kyōto | Giapon |
| XXIV | 2000 | Manchester | Regn Unì |
| XXV | 2003 | Sydney | Australia |
| XXVI | 2006 | Praga | Repùblica Ceca |
| XXVII | 2009 | Rio de Janeiro  | Brasil |
| XXVIII | 2012 | Pechin | Cin-a |
| XXIX | 2015 | Honolulu | Stat Unì |
| XXX | 2018 | Vien-a | Austria |

Anliure esteriore
* Sit ufissial
* Lista dij 68 Stat mèmber
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