Thread to make your brain hurt

[zaangalewa]

... I mean nothing in the physical sense.
What is nothing? A seemingly simple question, until you ask a physicist.
Can nothing exist is a question that physicist have held whole conferences on, and no one has yet answered definitively. Perhaps no one ever will.
We know for instance, that in the deepest/farthest regions of space where there are no stars for trillions of miles, temperature is very close to absolute zero...there is still gravity, so something is there.
And then there is dark matter.
Nothing may not exist.

... Good episode of Through the Wormhole tackled the question "What Is Nothing?" ...

If something is nothing it's impossible to be nothing. So the question "What [=something] is nothing?" is a contradiction. Nothing means nothing at all - and not "something what looks like as if it would be for us nothing".