今天的消息（New York Times） Astronomers Decide Pluto Is Not a Planet 未来行星的定义将是 a celestial body that is in orbit around the sun, has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a ... nearly round shape, and has cleared the neighborhood around its orbit. http://0rz.net/ad1LO 难过归难过，不过科学还是要严谨啊... --

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