国际天文学联合会

看来，即使国际天文学联合会依然把冥王星视为一颗行星，太阳系有九颗行星的经典理论也必须改变，但那得是另一番情形。

It seems that even if the IAU had kept Pluto 's status as a planet , the classical theory of nine planets in the solar system would have had to be changed , but the other way around .

国际天文学联合会在行星的新定义中将轨道作为一项衡量标准。

The new IAU planet definition mentions orbits .

给星体命名是由国际天文学联合会决定的。

The naming of stars is at the discretion of the International Astronomical Union .

第二年，国际天文学联合会（InternationalAstronomicalUnion）就把冥王星归入名为“矮行星”的一个新类别，因为在该学会看来，一颗名副其实的行星必须能够清空轨道上的其他天体，而冥王星做不到这一点。

The next year , the International Astronomical Union placed Pluto in a new category , " dwarf planet , " because in its view , a full-fledged planet must be the gravitational bully of its orbit , and Pluto was not .

谈到冥王星的特征，NASA科学家们正准备给一些他们发现到的东西进行非正式命名。他们可以将这些名字递交给国际天文学联合会以获得官方认证。

And speaking of Pluto 's features , NASA scientists are now giving unofficial names to some of the things they 've spotted -- names they can submit to the International Astronomical Union for official approval .

当国际天文学联合会最近重新定义了术语'行星'；

When the International Astronomical Union recently redefined the term'planet ' ;

这是一次由国际天文学联合会召开的会议。

It is the conference of the International Astronomical Union .

国际天文学联合会会员感兴趣的其他会议

Other Meetings of Interest to IAU Members

国际天文学联合会近日发布公报，将第31230号小行星永久命名为“屠呦呦星”。

The No.31230 asteroid was named " Tuyouyou , " according to a statement issued by International Astronomical Union .

官方声明由国际天文学联合会命名恒星，并在全世界组织有权姓名天文物体。

Official statement on naming stars from the International Astronomical Union , the worldwide organization that does have the authority to name astronomical objects .

2004年9月16日，经国际天文学联合会小天体提名委员会批准，一颗小行星被命名为“落下闳小行星”，以此纪念这位伟大的天文学家。

On September 16 , 2004 , with the approval from the International Astronomical Union , an asteroid was named after Luo Xiahong in commemoration of the great Chinese astronomer .