What are the most extreme substances in the world? No, not Mountain Dew; this list compiles and gives the details on the hottest, most flammable and most acidic substances known to man. One of which can melt through twelve layers of concrete.
What do you get when you stack carbon nanotubes on their ends and sandwich them together? A material that absorbs 99.9% of the light that touches it. The microscopic surface of the material is rough and uneven, which breaks up the light and makes it a poor reflector. Then add to that carbon nanotubes act as superconductors in certain arrangements, which makes them excellent light absorbers, and you have a perfect storm of black.