| 1. | Scale of the nine planets of the solar system
太阳系九大行星的大小比较 |
| 2. | Earth is one of nine planets which revolve around the sun
地球是围绕太阳旋转的九个行星之一。 |
| 3. | What mysteries do you know about the nine planets in the solar system
关于太阳系里的九大行星，你知道哪些奥秘？ |
| 4. | As we already know , our solar system contains nine planets and many comets and other objects
我们知道太阳系是由9大行星和许许多多的小行星、彗星组成的一个天体系统。 |
| 5. | If the nine planets really align , the inner and outer planets will locate at both sides of the earth , and will not appear at the same region of sky
为什么木星比其他大那么多倍？最多卫星的行星是那个好像是土星？可否给我一些高解象的九大行星相片？ |
| 6. | Leading astronomers declared thursday that pluto is no longer a planet under historic new guidelines that downsize the solar system from nine planets to eight
要天文学家周四宣布，在发布历史性的新方针后，太阳系九大行星缩减为八大行星，冥王星已不再是行星。 |
| 7. | Moving around the nucleus are extremely tiny particles , called electrons , which revolve around the nucleus in much the same way as the nine planets do around the sun
参考译文：围绕着原子核运动的是一些极其微小的粒子，称为电子，这些电子围绕着原子核旋转，正像九大行星围绕着太阳旋转一样。 |
| 8. | Brown and trujillo predicted that eventually more kbos even larger than quaoar would be found with follow - up observations and analysis . by then , pluto will likely be kicked out of the nine planets
据布朗和特鲁希略预测，随著往后跟进的观测工作和资料分析，天文学家将会不断发现比夸欧尔更大的天体。 |
| 9. | Oppositions between the earth and neptune . for these four planets , it will take 227 million years for them to align . for the nine planets , the time for them to align will be even longer than the age of the solar system
太阳系中拥有最多卫星的行星是那一颗，是时有变动的，随著科技进步，地面望远镜哈勃太空望远镜和其他太空探测器不时会发现新的卫星，影响排名。 |
