Competing theories of
existence.

Cosmos Explorer is a guide to the competing theories of existence. Different accounts of how the universe began, what dark energy is, what happens inside a black hole. The field has its own vocabulary and the theories pile up quickly, this site is built to make them legible.

Each theory is presented in plain language first, with the primary sources, the open objections, and visualisation that try to show what it claims. For readers who already have some interest in cosmology and want to see the alternatives, without needing a physics degree to follow along.