It's made out of the blackest black in the world: Vantablack.
Vantablack? Meh. Meet the Ultra-Black Vantafish
The Current State Of The Black Market: You Can't Buy Vantablack
Vantablack - Wikipedia
A sphere covered in Vantablack creates a fascinating illusion - Boing Boing
Vantablack Sphere
We explore the process and look at what Vantablack may become in the future.
This is not a disk, but actually, a sphere coated in Vantablack, one of the darkest pigments created : r/pics
New version of Vantablack is now so dark, it can't be measured
Anish Kapoor presents a world of illusion and mystery in spellbinding new exhibition in Florence