價格：免費
檔案大小：6.8 MB
版本需求：需要 iOS 6.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
This app has 30 video lessons about Gravity Facts.
Questions and Answers in Multiple Choice Format.
Great for Students/Teachers.
Awesome way to learn about Space, Gravity and Planets.
支援平台：iPhone, iPad