剧情介绍
Thefirstepisodetracesthedevelopmentofthefourrockyplanetsinoursolarsystem:Mercury,Venus,EarthandMars.Theywerebornatthesametimefromthesamematerial,yethavegoneentirelydifferentpaths.Whatforcesareatworkbehindit?WhyhasEarththrivedwhilsttheothershavefadedaway?Advancedspacemissionsrevealthemomentswhenthefateoftheseworldsturned. 展开全部
