from apod, compare 5866 and our milky way:
[singlepic=116,400,400,,center]
[singlepic=114,400,400,,center]
Category: Physical
有关自然，物理的日志
有关自然，物理的日志
from apod, compare 5866 and our milky way:
[singlepic=116,400,400,,center]
[singlepic=114,400,400,,center]