emptiness

The laws of physics do not provide for emptiness
but it does exist, it has been filed,
They say all things that exist have substance
but of what is nothingness compiled?

Does it have some molecular structure
that can be burned or frozen or replaced
with a set of elements or atomic gas
or can it be moved out, far into space?

Can science explain the mystery of nothing
or is it an unknown that they are afraid of
can one actually feel numbness, like a dream
tell me, what is emptiness made of?