宇宙距离

宇宙距离尺度和哈勃常数

Scale of cosmic distance and Hubble constant

移动星团视差的精确测定对于宇宙距离尺度以及许多天体物理关系的研究起重要的定标作用。

The precise determination of moving cluster parallaxes plays an important role in the calibration of cosmic distance scale as well as many other astrophysical relations .

这两种图景之间的差异可能会与超新星被当成“标准烛光”（也就是亮度已知的天体）来测量遥远宇宙距离的方式有关。

The difference between these two scenarios may have implications for how these supernovae can be used as " standard candles " objects of a known brightness to track vast cosmic distances .

太阳是宇宙中距离地球最近的恒星。

The Sun is the nearest star from the Earth and very ordinary among all stars in the universe .

宇宙γ暴距离及分布

Distance Scale and Distribution of the Cosmological γ - ray Bursts

光学[光波段]天线天文学家用光年表示宇宙空间的距离。

Optical antenna Astronomers use light-year to talk about distance in space .

月球是太阳系和宇宙空间中距离地球最近的一个的星体，它已经成为人类开展深空探测的首选目标。

Moon is the nearest satellite to earth in solar system and space . It has been the first option in the deep space exploration .

根据定义，它不能被看到，因此，美国宇航局的科学家集中在小星系M87的星系的核心，一个超大质量的“宇宙引擎”，距离地球5000万光年，而不是。

By definition , it can 't be seen , so NASA scientists focused instead on the tiny core of the galaxy M87 , a super massive " cosmic engine " 50 million light years from earth .

宇宙膨胀与宇宙学距离

Cosmic Expansion and Cosmological Distances

利用宇宙学的结果计算了微波背景辐射下太阳辐射的射程，并与地球大气中的情况做了比较。计算表明，宇宙中的辐射距离大约是地球大气中辐射距离的1亿倍。

The paper points out the radiation range of the sun in the universe is a hundred million times approximately as the range in the solar-earth space .