Pictures with wow factor

[Retro]

This thread is for pictures that make you go "wow!"

I'll kick it off with this picture of merging galaxies. No CGI, it really looks like this.

If a picture comes from an article that explains the background and context, please add that too like I've done here.

Fusión de las galaxias NGC 4568 y NGC 4567

Fusión de las galaxias NGC 4568 y NGC 4567

noirlab.edu

 

[Tiffany]

Great idea @Retro! I'll see what I can find to add. I love collecting amazing pictures!