Science

Nuclear is the future for space

作者：THE GUARDIAN

A TEAM of American engineers is studying the feasibility of a nuclear-powered mission to the outer edges of the solar system. The target is Neptune, the eighth planet from the sun, and its icy moo...

点击阅读全文

对本期电子报订户、有效期内的VIP教师会员和本学期二十一世纪英文报尊享卡用户，我们开放所有内容：
如果您拥有以上权限，请点这里登录；
订阅电子报，请点这里；
激活VIP教师卡，请点这里；
激活21英语尊享卡，请点这里。