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- Plumber posted on 08/03/2005We were taught in school lessons that there are 9 planets but a Caltech astronomer Michael Brown lately announced that there are actually ten planets. A new planet is added to the Solar family. It is a bit smaller than Pluto. Scientists have no good rational to have a new planet included in the Solar system. Even Pluto should be excluded, too. Among the nine planets, four planets including Earth, Venus, Mars and Mercury are terrestrial objects while others being gaseous, except for Pluto that is compose
- Plumber posted on 04/24/2005ÍõÃÉΪʲô²»×Ôɱ£¿ ÉÏÌùÕß: ´÷Èý¸ö±í 04-22-05 ÎâìñÀ´ ¡¡ÍõÃÉÏÈÉúÔÚÑݽ²Öжà´Î̸µ½ÒÕÊõ¼Ò˼ÏëµÄ¼«¾³¿ÉÄܱÆʹËû×ßÏò·è¿ñ»ò×Ôɱ¡£Õâ´ÎÔÚÖÐɽ´óѧÑݽ²Ëû°Ñ»°ÌôÃ÷ÁË£ºÖйúûÓÐΰ´óµÄ×÷¼Ò£¬ÒòΪ×ÔɱµÄÌ«ÉÙ¡£ ¡¡¡¡ÓÚÊÇÓÐÍøÓÑÎÊ£º ¡¡¡¡ÍõÃÉÏÈÉú£¬ÄãΪʲô²»×Ôɱ£¿ ¡¡¡¡ÍõÃÉ»áÈçºÎ»Ø´ð£¿ ¡¡¡¡ÎÒÔøÔÚÒ»´ÎѧÊõ»î¶¯ÖÐÎÊÍõÃÉ£ºÄãϲ»¶ÄÄһλÅúÆÀ¼Ò¶ÔÄãµÄÅúÆÀ£¿Õâ¸öÎÊÌâÏÔÈ»ÓÐã£ÂÛÔÚÆäÖУ¬ÍõÃÉÏÈÉúÍõ¹Ë×óÓÒ¶øÑÔÎĸ˵µÃÓÐȤ£¬ÌýÕßÒ»ÀÖ£¬´ó¼ÒÍüÁËÎÊÕßÖ®ÎÊÓë´ð·ÇËù´ð¡£ ¡¡¡¡Õâ¾ÍÊÇÍõÃɵÄÖǻۡ£ ¡¡¡¡ÍõÃÉÏë×ÔɱµÄʱºòËû»áÈ¥ÂòÒ»°Ñµ¶£¬ËûÕý×¼±¸ÏÂÊÖʱ
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