人 民 网 版 权 所 有 ，未 经 书 面 授 权 禁 止 使 用
Claude全球宕机，机房爆炸，美财政部全面停用，恐遭英伟达断供
。下载安装 谷歌浏览器 开启极速安全的 上网之旅。对此有专业解读
What are Moon phases?NASA says the Moon takes around 29.5 days to circle Earth, moving through a set of eight distinct phases along the way. Even though we always see the same side of the Moon, the portion lit by the Sun changes as it travels, which is why it can look full, half-lit, or barely visible at different points in the cycle. These changing views are what we call the lunar phases, and there are eight in total:
First FT: the day’s biggest stories