Stellarium 一套開放原始碼的免費星圖軟體

This is one of my favorite astronomy softwares. It's free, beautiful, and the features are out of your expectations for a free software! Now, download it, install, turn-off the light, and enjoy your star night.

It supports Windows, Linux, and Mac OS X

讓你可以在自家電腦螢幕上享受一個完全屬於自己的超逼真立體星空，就和你在夜闌人靜時仰頭望向天際所能夠看到的東西一模一樣

http://www.stellarium.org

Screen Shots