my friends are such [nerds], they got into a huge drunk argument about whether the we existed in an ekpyrotic universe or an exponential expansion universe
the ekpyrotic universe, or ekpyrotic scenario, is a cosmological model of the origin and shape of the universe
"my friends are such [nerds], they got into a huge drunk argument about whether the we existed in an ekpyrotic universe or an exponential expansion universe" What is the definition of "ekpyrotic universe"?