It always creeps me out…
…that no matter
how close
you get
the pupil
seems to
devour light
like a black hole
it reflects no light
That’s because the pupil is literally a hole in the iris that lets light enter the retina. No light is reflected by the pupil because it is either absorbed directly into the tissues of the eye, or it is absorbed after it is refracted around the inside of the eye.
Then black holes are merely the eyes of the universe
Whoa
Source: castiels-mother
Reblogged from coolerrobots
