When there is no light and we see only blackness, we think we see nothing.
We look out into the emptiness of space and we see blackness, we think we see nothing.
We see nothing when we look out at the world and cannot see what is outside the periphery of our vision. We see nothing when the scotoma in each of our eyes fills in the hole in our seeing with nothing-missing. That is what nothing looks like, and it resembles blackness only in that it deprives the eye of objects.
I think this is why I have gradually rejected the phenomenological metaphor of horizon. Nothingness is not distant. No vantage point, however high, can reveal it. Only movement, memory and thought makes nothingness known.
Peripatetic philosophy is a redundant phrase.