votes24. August 2006, Prague ……six IAU Resolutions were also passed at the Closing Ceremony of the General Assembly:
5.Resolution 5A: "Definition of 'planet' "
6.Resolution 6A: "Definition of Pluto-class objects"
The IAU members gathered at the 2006 General Assembly agreed that a "planet" is defined as a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome上一页 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] ... 下一页 >>
时间：2009-4-21 17:32:30
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