| 1. | Yet there are fundamental differences between these two outer - planet missions 但是这两次外行星任务有重大的差异。 |
| 2. | It should be capable of detecting exoplanets smaller than the earth 这架望远镜能够侦测到体积比地球还小的系外行星。 |
| 3. | Extrasolar planetary system 太阳系外行星系 |
| 4. | It has been designed to spot exoplanets bigger than twice the size of the earth 这艘太空船是用以捕捉体积在地球两倍以上的系外行星的踪影。 |
| 5. | All but three appear , by their great size and low density , to be gas giants 这些系外行星都是体积庞大且密度极低的气态巨星,只有三个例外。 |
| 6. | Most of the exoplanets discovered so far are much closer to their host stars than the ice line 至今所发现的系外行星中,大多行星同主星的距离小于冰线。 |
| 7. | The first such new world was discovered in 1993 by researchers at pennsylvania state university 1993年,宾夕法尼亚州立大学的研究人员首次发现了一颗系外行星。 |
| 8. | Planetary opposition happens when the earth lies between the sun and the planets in a straight line 指地球处于太阳和行星之间的直线上,只有外行星才有冲的现象。 |
| 9. | Since 1991 observers have discovered some 120 exoplanets ? worlds outside our solar system 自1991年起,天文学家已在我们太阳系外的世界,发现了大约120个系外行星。 |
| 10. | In this lecture , the history of discovery , detection methods , special stories and prospect will be discussed 这讲座探讨了系外行星发现的历史、方法、故事与展望。 |