Scientists Plan to Make 3-D Map of the Milky Way 科学家计划制作银河系的3d地图 From VOA Learning English, this is Science in the News. Im June Simms. And Im Jim Tedder. Today on the program, we tell about developments in space exploration

发表于:2019-01-12 / 阅读(35) / 评论(0) 分类 2014年VOA慢速英语(三)月

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

发表于:2019-01-22 / 阅读(44) / 评论(0) 分类 自然百科2011年

We live amongst 200 billion stars, in the Milky Way galaxy, a vast cosmic city. The earth is located in a quiet neighborhood, in a safe neck of the woods. But what if we could take our planets on a journey through the galaxy? What wonders would be se

发表于:2019-01-22 / 阅读(37) / 评论(0) 分类 自然百科2011年

It's really a wonderful time to be an astronomer, especially in studies of Milk Way. Were undergoing something for revolution. In fact, we can take you places. They're really quite remarkable. We are about to embark on an amazing journey. We'll take

发表于:2019-01-22 / 阅读(36) / 评论(0) 分类 自然百科2011年

Now, of course, I can't show you a picture of the galaxy on our screen. We can't fly above the galaxy and take a picture of it, and show you. We're stuck in the disc of the galaxy, but we can still image it from the ground, in fact, this image is a p

发表于:2019-01-22 / 阅读(43) / 评论(0) 分类 自然百科2011年

Look closer and there is something strange about this gas and dust. There're patches where it appears to glow. These bright glowing clouds are called nebulae. And along with the Orion Nebula, our Milky Way has some spectacular examples, the Eagle Neb

发表于:2019-01-22 / 阅读(46) / 评论(0) 分类 自然百科2011年