Hi guys, Welcome to the Advanced Video Search Engine, and you are watching 【林郁梅老師】不同緯度的星空軌跡01 基本天球概念. That video is uploaded by TFGCOOCS at 2017-10-23T23:32:29-07:00. We are promoting this video only for entertainment and educational purpose only. So, I hope you like & enjoy it. [c1VLiKIXntg]