Culture and Discovery

Earth's true color revealed

作者：Paul Creasy

地球的“素颜照”什么样？

WHAT color do you think Earth is? If you think of it as a big bright blue ball, you may be wrong. It is actually dark grayish blue without any filters (过滤) or editing, as you can see in a new satellite (卫星) photo.

点击阅读全文

对本期电子报订户、有效期内的VIP教师会员和本学期高一尊享卡用户，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。