supernova remnant

A starfield is shown with a long blue-glowing nebula taking up much of the frame. The nebula appears, to some, similar to a fish or a mermaid. Please see the explanation for more detailed information.
一个长长的蓝色发光星云占据了画面的大部分。对一些人来说，这个星云看起来就像一条鱼或一条美人鱼。有关更多详细信息，请参阅说明。