The cosmological principle states that the universe is homogeneous and isotropic when viewed on a large enough scale. This means that the distribution of matter and energy is uniform, and the universe looks the same in all directions.
5 Must Know Facts For Your Next Test
The cosmological principle underpins many modern cosmological models, including the Big Bang theory.
Homogeneity means that any large volume of space contains roughly the same amount of matter.
Isotropy means that observations of the universe's properties are consistent regardless of direction.
This principle simplifies equations in cosmology by assuming uniformity in space.
Evidence for the cosmological principle includes the cosmic microwave background radiation and large-scale galaxy surveys.