星云的

According to the evolution theory of the solar system, the planets were formed from collapse of the planetesimal clouds. The asteroids, occupying the transition region between the rocky terrestrial planets and the outer gas giants with special configuration, underwent the collision evolution process.

按照太阳系的行星由星云塌缩而成的演化理论，对在太阳系中处于特殊位置和具有特殊存在形态的小行星的物理参数的研究，可以为太阳系早期演化条件提供证据；为小行星碰撞演化研究提供边界条件。

The plane of our Milky Way Galaxy runs right through Auriga, the Charioteer. A good part of the ancient northern constellation's rich collection of nebulae and star clusters is featured in this expansive, 10 degree wide skyscape.

我们银河系的银盘从马车驾驶员御夫座的右边穿过，这个古老北天星座的星云、星团富集区域的大部分显示在这张10度宽的星野照片中。

Stargaze: Hubble's View of the Universe captivates the viewer with stunningly high-definition color images of galaxies, nebulae, and heavenly bodies closer to home.

遥望星空：哈勃眼中的宇宙》以她那令人眩晕的高分辨率的星系、星云及天体的图像，迷住了观众的眼睛。

Stargaze: Hubbles View of the Universe captivates the viewer with stunningly high-definition color images of galaxies, nebulae, and heavenly bodies closer to home.

遥望星空：哈勃眼中的宇宙》以她那令人眩晕的高分辨率的星系、星云及天体的图像，迷住了观众的眼睛。

Meanwhile, astronomers in California were building the largest telescope in the history of the world - a new telescope on top of Mount Wilson, near Pasadena, with a mirror 100 inches (2.5 meters) across. In 1923, Edwin Hubble used this new telescope to prove that some of the nebulae, including the Sombrero, are actually other galaxies similar to our own Milky Way.

期间，天文学家在加利福尼亚建造了当时世界上最大的望远镜，该望远镜在 Pasadena 附近的威尔逊山顶，拥有2.5米的镜面。1923年， Edwin Hubble 用这个新的望远镜证明部分星云包括 Sombrero 实际上是和我们的银河系一样是星系。

Normally this material is invisible, but some of it can be seen in silhouette against the nebular background, as long dust lanes and a small, dark, elliptical-shaped knot.

平时，我们是看不见这些物质的，但是，我们通过星云这个背景可以看见它的一部分，它就像是一条长长的灰尘组成的细线，或者是一个一个很小的椭圆形的结。

A pulsar is a celestial object that emits light in short burst a pulsar in the crab nebula flashes at a rate of 30 times/s,suppose the light pulses are caused by the rotation of a spherical object that emits light from a pair of diametrically opposed "flashlights" on its equator.

脉冲星是一种以短爆发形式辐射光的天体。假设球型天体赤道面上有一对&发光塔&，并且这对发光塔的联线构成赤道面的直径，进一步假设光脉冲产生于球形天体的转动，那么巨蟹座星云中的一个脉冲星的闪光频率是每秒30次。

Spread across 128 monitors at NASA's Advanced Supercomputing facility in California, colorized red and green nebulae span a vast region of our galaxy.

在位于加利福尼亚的NASA的先进超级计算机设备128块监视器上，散布的着上红色和绿色的星云展示了我们银河系的一片广大区域。

But Orion's stars and nebulas don't look quite as colorful to the eye as they do in this lovely camera image, taken early last month at the Black Forest Star Party from Cherry Springs State Park in Pennsylvania, USA.

但是，猎户座中的恒星和星云肉眼看上去并不像这张可爱的照片中那样多彩。这张照片是上个月在美国宾夕法尼亚的欢乐泉州立公园的黑森林星空营地上拍摄的。

This image of the planetary nebula SuWt 2 reveals a bright ring-like structure encircling a bright central star.

本图中的行星状星云SuWt2的结构是：一个明亮的环围绕的一颗明亮的中心星。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷