简介： The first episode traces the development of the four rocky planets in our solar system : Mercury, Venus, Earth and Mars. They were born at 林依晨最新的电视剧the same time from the same material, yet have gone entirely different paths. What forces are at work behind it? Why has Earth thrived whilst th甄嬛传rmvb下载e others have faded away? Advanced space missions reveal the moments when the fate of these worlds turned.
