ASTRO 142 Chapter Notes - Chapter 6: Anthropic Principle, Cosmological Principle, Big Bang
Document Summary
The universe that is accessible to science is the physical universe. All things observed, affects or influences other observables, or affect by physical things. Time exists as there are period occurrences everywhere in the universe. Time exists and is independent of human perception. Space and time are physical (modern theories of special and general relativity) Any model of the universe must include and explain space and time. Created with time that extended infinitely t=0 only appears to be a boundary because of how we have divided space time. North pole is the furthest north you can go, but not the end of earth . Contrasting the universe was created at 7:20am hypothesis with the big bang . An infinitely old universe is not nothing, so it must have been created. Finite space and finite time can form a self contained finite space-time. Initial conditions: description of how things were at the earliest possible moment that we can contemplate.
