Will Earth Prove To Be the ‘Standard Model’ For Evolution Of Life In
"Even conservative astronomers are confident that the volume of space-time within range of our telescopes—what astronomers have traditionally called ‘the universe’—is only a tiny fraction of the aftermath of the Big Bang. We’d expect far more galaxies located beyond the horizon, unobservable, each of which (along with any intelligences it hosts) will evolve rather like our own.”