Rainbow Sunset

I got this idea last night when I was driving somewhere with my mom and saw how the sunset look like a rainbow and how everything not illuminated by a light was completely black. I really thought it was pretty so I drew this. Also, not many people know, I really like space. I watch a ton of documentaries on them all the time. One said that eventually, if the very far future, our galaxy will collide with another. They said that is the Earth was still alive that we would be able to see the other galaxy in the sky. I though that it would be absolutely breath taking, hence the galaxies in the almost night sky.
Anyway, I hope you like it.