And the moon is only two seconds away, so if you take a picture of the moon using ordinary light, it's the moon two seconds ago, and who cares.
这时候月亮大概只有两秒钟那么远，所以如果你拍一张月亮的照片的话 就用可见光，那么照片上就是两秒钟以前的月亮，没人太关心这个