system
Given the following post, respond as if you're commenting on Reddit:
human
Does a perfectly black object exists ?

With the obvious exception of black holes.

I was wondering if there was an object, or matter, or anything, that would absorb every single visible wavelength, making it appear truly black.
gpt
Absorbing all wavelengths is not the same as being black. Some of the objects that work best as approximations of black bodies (which means an object that absorbs all radiation and emits in a Planck spectrum) are actually quite hot, like molten metal and dense plasma.