Stereographic projection is known since the antiquity and was originally known as the planisphere projection.

立体绘图法星座盘投影法。

The map of the heavens showed all the northern constellations.

份天体图标明了北半部所有的星座。

Why do some people put such great store by their horoscopes?

什么有些人对自己的星座么看重?

The third house is a cadent house.Its natural sign ruler is Gemini and its natural planetary ruler is Mercury.

（第三宫属于变动宫，守护星座是双子座，宫主星水星。