We still don't know how many galaxies there are in the universe.

我们还不知道宇宙中有多少个星系。

Extragalactic nebula is invisible to the naked eye.

我们用肉眼是看不到河外星系的。

Quasars are the highly energetic cores of distant galaxies.

类星体是遥远星系的极为活跃的核心体。

NGC 1512 is a barred spiral galaxy in the southern constellation of Horologium.

NGC 1512是一个处在南时钟座的棒旋星系。

Markarian 273 is a galaxy with a bizarre structure that somewhat resembles a toothbrush.

马体273是一个有着奇异外形的星系，有些像牙刷。

Each galaxy contains myriads of stars.

每一星系都有无数的恒星。

29 By making Samyama on the polestar, one gains knowledge of the motions of the stars.

专念于北极星，便可得星系运动的知识。

The Salamanders Chapter hails from a binary planetary system in the western reaches of the Ultima Segmentum.

火蜥蜴军的家园位于极限星系的西部边缘地带的行星上。

Explanation: Across the heart of the Virgo Galaxy Cluster lies a string of galaxies known as Markarian's Chain.

贯穿室女座星系心脏有一条星系链，被称为马之链。

The confirmation of Mars-Earth panspermia would suggest that life, once started, could readily spread within a star system.

「火星–地球」胚种证实，表示生命一旦出现，便能轻易在星系内扩散。

Right up to the present day, all experimental data, on scales ranging from subnuclear to galactic, are successfully explained by these three theories.

而到目前为止，小至次原子核，大至星系，所有的实验数据，都能用这三大理论圆满地解释。

Ambitious future observers might also send out probes that escape the supergalaxy and could serve as reference points for detecting a possible cosmic expansion.

有企图心的未来观测者，或许会发射一些能够脱离超级星系的探测器，做为侦测宇宙膨胀的参考点。

A satellite galaxy of our Milky Way, the Small Magellanic Cloud is wonder of the southern sky, named for 16th century Portuguese circumnavigator Ferdinand Magellan.

我们银河系的一个伴星系——小麦哲伦云——是南方空中的奇景。以16世纪的著名的环游世界的葡萄牙人麦哲伦的名字命名。

The corotation circle acts as an interface that can either reflect or transmit these waves, allowing them to gain energy at the expense of the global rotational kinetic energy of the galaxy.

共同旋转圈的作用，像个可以反射或透射这些波的介面，让它们转换星系整体的转动动能为自身的能量。

The end point of the collapse and relaxation of a protogalaxy is a dark matter halo, inside of which the baryonic gas is in hydrostatic equilibrium at a temperature of typically a few million degrees.

原星系塌缩与松弛的最终点就是黑暗物质晕，里面有处于流体静力平衡的重子气体，一般温度约数百万度。