| 1. | It seems to have been invented by the american astronomer david rittenhouse in about 1785 .
它似乎是美国天文学家DRittenhouse在1785年前后发明的。 |
| 2. | A suitable method for finding the intrinsic brightness of a star was discovered by the american astronomer w. s. adams .
美国天文学家WS亚当斯发现了一种求恒星固有亮度的好办法。 |
| 3. | It seems to have been invented by the american astronomer david rittenhouse in about 1785
它似乎是美国天文学家d rittenhouse在1785年前后发明的。 |
| 4. | A suitable method for finding the intrinsic brightness of a star was discovered by the american astronomer w . s . adams
美国天文学家w ? s亚当斯发现了一种求恒星固有亮度的好办法。 |
| 5. | A suitable method for finding the intrinsic brightness of a star was discovered by the american astronomer w . s . adams
美国天文学家w s亚当斯发现了一种求恒星固有亮度的好办法。 |
| 6. | American astronomer edwin hubble in 1929 discovered that the recession rate of galaxies was directly proportional to their distance . this is what we call the hubble s law which defines that v h
美国天文学家哈勃于1929年发现星系退行速度与其距离存在著正比的关系，即所谓哈勃定律：退行速度v h |
| 7. | With the release of a long - awaited report , us astronomers now have a hit list of observatories that may have to shut down to save the national science foundation ( nsf ) money in coming years
随着等待已久的报告发布，美国天文学家得到了一份痛心的名单，为节省国家科学基金（ nsf ）名单上的许多天文台将在未来几年关闭。 |
| 8. | In the beginning of the 20th century , american astronomer edwin hubble discovered that nearly all galaxies are moving away from us with velocities proportional to their distances from the earth , inferring that the universe is expanding
在二十世纪初，美国天文学家哈勃h ubble提出宇宙膨胀理论，并观测到我们四周的星系正以不同速度向外飞逝，距离愈远的，飞逝的速度也就愈高。 |
| 9. | It was through this method that a group of american astronomers worked out in 1998 the distance of some extremely remote galaxies . if we compare the distanced of these galaxies deduced from type ia supernovae with those from hubble s law , it will provide extremely valuable information for astronomers to verify the big bang theory
一九九八年，一群美国天文学家便是透过观测ia型超新星来推算出一些极遥远星系的距离，再对照这些星系光谱中的红移程度，给我们的宇宙膨胀理论提供了全新的资料。 |
