One of the most common uses [1] for Vantablack is coating satellites so they don't reflect light in to celestial navigation [2] sensors. Of course spy satellites are also covered in the stuff (there is even a variant that is highly effective on visible and infrared light).
4 comments
[ 1.9 ms ] story [ 18.1 ms ] thread1. https://www.abc.net.au/news/science/2017-01-13/vantablack-wh...
2. https://en.wikipedia.org/wiki/Celestial_navigation
http://stuartsemple.com/project/black-v1-0-beta-worlds-matte...