Which statements are true regarding the cosmological principle? 1 The universe looks the same from all directions, but can change and evolve over time. 2 The universe looks the same from all directions, and hasn't and won't change or evolve over time. 3 The universe can't be studied scientifically because scientists can't directly test their hypotheses. 4 Scientists can study the universe because the cosmological principle suggests that any physical laws or processes are the same for the entire universe.