With the celestial globe, people can figure out the star atlas even during day-time or on a cloudy night.

利用浑象，无论是白天还是阴天的夜晚，人们都可以随时了解当时应该出现在天空的星空图案。

The oldest complete star atlas known, it dates to the years 649 to 684, discovered at the Silk Road town of Dunhuang in 1907.

这份我们所知最古老、最完整的星图，可以追溯到公元649到684年，是于1907年在丝绸之路上的城镇敦煌发现的。

Just to let you have an idea of what a serious star atlas looks like, the most detailed star atlas on paper nowadays is similar to the atlas below.

这幅星图只是让你们见识一下专业的星图是甚么模样，它与现时所印制的星图中最详尽的相似。