Question

which is the blackest object?

Answer 1

Vantablack
and
Black hole
are the blackest objects

Answer 2

A British nanotech company has created what it says is the world'sdarkest material. It is so dark the human eye can't discern its shape and form, creating what has been called a black hole. Vantablack, made out of carbon nanotubes, is designed by Surrey NanoSystems and absorbs 99.96% of all light that hits it.