黑洞

A slight elongation of the innermost stable circular orbit?

如果将围绕黑洞的轨道调至尽可能的小（即轻微拉长最内层的稳定圆形轨道），对岁差率有何改变？

That mystery happens to be that of the even clandestine, black hole.

这就是一直以来处于扑朔迷离之中的黑洞。

The gravitational fields required to make such a closed time-like curve would have to be very strong,"on the order of what you might find close to a black hole," Ori told LiveScience."We don't have any way of creating such strong gravitational fields today, and we certainly have no way of manipulating any such gravitational fields."

要制造出这样一条封闭时间曲线的引力场非得要非常强，"大约和你在一个黑洞附近找到的那么大"Ori告诉LiveScience"我们现在没有任何办法来制造这么强大的引力场，而且，可以肯定地说，我们无法来控制任何一个这样的引力场"

This difference can be explained by the no boundary proposal. The history of the universe in imaginary time, will be a closed almost smooth surface.

第五个回答：乍一看，大爆炸就像时光倒流地回顾一个黑洞瓦解的过程，但两者存在重大差异。

And with a booming Homeland Security-Industrial-Complex as an adjunct to the defense industry's monetary black hole, its no surprise that Michael Queralt, the firm's cofounder and managing director told the publication, The reason this development is interesting to us is it is very close to our heart in the way we are going with the business.

"与蓬勃发展的国土安全部工业园区作为对国防工业的金融黑洞，它毫无疑问，迈克尔德克拉尔特，该公司的创始人及董事总经理告诉出版物，"这一发展的原因是我们感兴趣的是它是非常接近我们的心的方式我们将与业务。

Since1973, when Hawking discovered the thermal radiation of black hole, this problem has been widely studied by means of theory of quantum field in curved space-time, Green's function method and the conformal transformation etc.

从1973年霍金发现黑洞热辐射起，人们对这个问题采用弯曲时空的量子场论、格林函数法、共形变换等方法进行了广泛的研究。

Firstly, the line element of an accelerating black hole described by advanced Eddington coordinate and the surface equation of event horizon is given.

本文包含两个方面的研究工作：加速动态黑洞的热性质以及具有Killing对称性时空的Einstein-Hilbert作用量。

Whereas in China, a new kind of coordinate transformation has been used, which brings a dynamic research on black hole instead of the static research.

而国内使用了1种新的坐标变换，使黑洞的研究从静态进入到了动态。

Using the damping scaling theory of the free current in cosmism,it unitedly estimated that the mass and radius of the classical black hole, Planck particle ,nucleon,electron,particle of dark matter,and photon.

讨论了多成分宇宙中稳定粒子的基本性质，用宇宙演化中的自由流阻尼标度理论统一估算了经典黑洞、普朗克粒子、核子、电子、暗物质粒子、光子的质量和半径，量级与某些已知数据相符。

World-renowned scientist and cosmologist Prof Stephen Hawking will discuss theories on the origin of the universe.

霍金一直从事宇宙的研究工作，他从爱因斯坦相对论中得到启发，发现在宇宙中，空间、时间与黑洞之间的关系。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。