Hubble image of galaxies in Sculptor implies 100 billion galaxies in the Universe.

http://www.slate.com/blogs/bad_astronomy/2016/04/07/hubble_image_of_galaxies_in_sculptor_implies_100_billion_galaxies_in_the.html

Look back at the image taken by Hubble. Look at it closely. The Universe is so vast it may be impossible for us to grasp its size and scale; yet by studying it, by embracing it, we see that our being a part of it is special.

If there is one most amazing thing that astronomy, that science, has shown us, I believe it is that.