alkuräjähdysmalli
The Big Bang model, or alkuräjähdysmalli in Finnish, is the prevailing cosmological model for the observable universe. It describes the early development of the universe from a state of extremely high density and temperature. According to this model, the universe began approximately 13.8 billion years ago and has been expanding ever since.
Key evidence supporting the Big Bang model includes the cosmic microwave background radiation, which is faint
The model posits that in its initial moments, the universe was a singularity, a point of infinite
While the Big Bang model successfully explains many observed phenomena, certain aspects, such as the nature