Except cows can see colour. They only have 2 types of colour receptors in their eyes, compared to humans 3, (missing the red one, from what I gather with 30 sec of googling?) so their colour vision is much more limited compared to ours, but they are not colour blind.
Pretty cool, definitely cleared up a few for me, but … nobody knows what happens in a black hole, they are a big warp in spacetime, and it’s mathematically possible that they lead to a different part of the universe or contain an ~infinite amount of space that you could live in. See supermassive black holes, einstien-rosen bridge, or the nobel work of Penrose. But yes they are created due to density
The reason why medieval stained glass windows are thicker on the bottom is a deliberate choice to make the party which would bear the weight of the windows stronger.
Isn’t “it’s not a tree it’s a [name plant type] that looks like a tree” true for most trees?
