Why is there something rather than nothing ?

 

Metaphysics is the branch of philosophy that considers what exists – and what doesn’t. Even in space, vacuums contain a few atoms per cubic metre; extremely low densities are still more than nothing.
But is there anything beyond our Universe, or is there some sort of emptiness it expands into, or is this Universe all there is? Why did the Big Bang happen, how did it create spacetime out of seemingly nothing? Even if the Universe undergoes a cycle of expanding and contracting, the question remains of why it’s there in the first place and cosmologists don’t have a good explanation.