Curved or straight, its a shape only formed in the 2 dimensional space. Its design and form is apparent only In the 3 Dimensional space when we get above the FLAT. But here is the tricky part we actually exist in a 4 dimensional space!!! And wonder how they would show up in that dimension? And What wondrous shapes of the 3 Dimensional world we would be confronted in that dimension?

I am seeing this image the way its gets to me as it is.
For me just few things I can notice except what Harsha has explained, minor dots I can see which seems to be sensor dust marks.
I loved the inclusion of few white pixels in right top corner.

TFS

I think somewhere science, religion, philosophy etc meet. Not sure where!

Science is an attempt at understanding art of nature.