2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/35284I point out that according to the Copernican principle our universe is not unique. The way to make sense out of this statement is for us to construct a gravitational instanton that will tunnel out of our vacuum into another, to form a universe other than our Hubble bubble.an essay deemed not to be worthy of even an honorable mentionGeneral Relativity and Quantum Cosmologytext