Excellent photography, the use of light and darkness in this image is done perfectly good balanced. The colors are really mixing in great.
As for the composition nicely done, you have a good point of interest the sun as for the middle point and the color range dividing the image perfect in the middle and the clouds giving more to look at.
As for the technique it speaks for it self as everything falls in place in this photo.
The impact this image has on me is great as well it just show's how beautiful the world is even as you may have seen the most of it.