Icy Callisto appears to be the most heavily cratered object in the solar system.
Icy Callisto appears to be the most heavily cratered object in the solar system.
冰冻的木卫四看上去像是太阳系中表面坑洞最多的一个星体。
Icy Callisto appears to be the most heavily cratered object in the solar system.
冰冻的木卫四看上去像是太阳系中表面坑洞最多的一个星体。