天体的

As a coelostat, MA tracks the motion of celestial objects observed at their meridian passages.

MA 作为定天镜跟踪天体的运动，望远镜在天体中天前后进行观测。

While an astronomical image provides a direct and spectacular view of the universe, a spectrum plays an essential role for our understanding of the physics behind.

虽然拍摄影像可直接展现天体的壮丽形态，但是光谱技术却更能为深入了解天体上发生的物理过程提供重要资讯。

of Theoretical Physics and the physical nature and targets of the disciplinary procedures. In 1859, according to Kirchhoff solar spectra and thermodynamic interpretation of Fraunhofer lines, asserted that the sun and Earth-like existence, in some chemical element, indicating that can be used in theoretical physics, experimental results from the universal laws of astronomical objects to the inherent nature of the astrophysical theory of the beginning.

利用理论物理方法研究天体的物理性质和过程的一门学科。1859年﹐基尔霍夫根据热力学规律解释太阳光谱的夫琅和费线﹐断言在太阳上存在著某些和地球上一样的化学元素﹐这表明﹐可以利用理论物理的普遍规律从天文实测结果中分析出天体的内在性质﹐是为理论天体物理学的开端。

Next, we reviewed the connection between RBLs and XBLs and the energy radiative process of BL Lacertae. Synchrotron radiation from radio to optical band and inverse Compton Scattering in γ ray wavebands are a wide accepted point. The beam model and gravitationally lensed model are two models associated with the radiative process. At present people tends to favor the previous one.

接着我们对射电选BL Lac型天体和X射线选BL Lac型天体之间的关系以及BL Lac型天体的能量辐射机制进行了评述，从射电到光学的同步辐射和γ射线波段逆康普顿散射的观点受到大家的普遍接受，射束模型和引力透镜模型是与辐射机制相关的两种模型，目前比较倾向于射束模型的解释。

In deep-space exploration, the probe starts from the parking orbit near earth and flights toward the target object.

但对于深空探测器的运动而言，当它从地球停泊轨道上飞抵目标天体附近时，在未变轨前，相对目标天体的运动通常是双曲线轨道。

By 1904 Zeiss had developed and manufactured the "stereocomparator"; an instrument that would permit the measurement of relative distances, and reveal changes within a star field by comparing one image against another simultaneously.

1904年，蔡司公司设计生产了"stereocomparator"立体测远计，能够测量天体间距，能够通过对比恒星系的天文图象来揭示天体的变化。

Not that we'll be visiting any time soon, but stargazing astronomers at the Harvard-Smithsonian Center for Astrophysics have discovered a distant Earth-like planet that shares similar qualities with our own world, such as an abundance of water.

美国这不表示我们很快会前往探访，但哈佛─史密森天体物理中心负责观测天体的天文学家已经发现一个遥远的类地球行星，它跟地球具有若干类似特点，例如有大量的水。

The controller calculates the position of heavenly bodies based on time, date, and location, and the telescope swivels to lock on for you.

控制器会根据时间、日期及方位计算出天体的位置，然后望远镜自动旋转，跟踪锁定天体。

From its unique perch some 570 kilometers (353 miles) above Earth, the telescope is our eye on the cosmos, snapping pictures of more than 30,000 celestial objects, some of them located on the far ends of the universe.

哈勃望远镜地处地球上空约570公里（353英里）处，被视为人类探测宇宙的&眼睛&。目前，它已拍摄到三万多个天体的照片，其中一些天体远在宇宙尽头。

From its unique perch some 570 kilometers (353 miles) above Earth, CL01-26, the telescope is our eye on the cosmos, snapping pictures of more than 30,000 celestial objects, some of them located on the far ends of the universe.

哈勃望远镜地处地球上空约570公里（353英里）处，被视为人类探测宇宙的&眼睛&。目前，它已拍摄到三万多个天体的照片，其中一些天体远在宇宙尽头。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。