单词：galaxy clusters
单词：galaxy clusters 相关文章
Part One Initial consonants and consonant clusters English words begin with no, one, two, or three consonants. A. Listen and repeat. Read across the chart. The first word has no initial consonant. No
4+1听力口语MP3
Here is an image. 这是一张照片。 Since galaxy clusters are representative slices of the universe, scaled-down versions. 因为星团可以看做是宇宙的缩小版。 They are mostly made up of dark matter, 它们也是大部分由暗物质构
TED演讲商业篇
Here are some images of clusters of galaxies. 这是一些星团的照片。 They're exactly what they sound like. 正如听上去一样。 They are these huge collections of galaxies, 它们是一堆星系， bound together by their mutual gravity. 由
TED演讲商业篇
We are traveling upwards away from our solar system, out of the spiral arms of the Milky Way. In front of us, lie vast clusters of stars, satellite groups that orbit the heart of our galaxy. These are globular clusters, over 150 have been discovered.
自然百科2011年
Measuring the brightnesses and colors of the stars in the globular cluster, we can figure out how old they are. Here is the remarkable thing: they are very old. Globular clusters, at least the stars in the globular clusters, in many cases, are almost
自然百科2011年
But if you look carefully, stars aren't spread smoothly across the whole sky. They are gathered together into a band that loops around the sky which we call the Milky Way. That bright strip across the sky with its extraordinary abundance of stars and
探索与发现2013年