Final answer:
The universe is not unchanging and unchangeable. The Big Bang theory suggests that the universe originated from a singularity and has been expanding ever since.
Step-by-step explanation:
The question about an unchanging and unchangeable universe can be discussed in the field of physics. In the scientific community, there are different theories and hypotheses about the nature of our universe. While some believe in a steady-state universe or a multiverse with infinite possibilities, there is evidence to suggest that our universe is not static.
According to the Big Bang theory, our universe originated from a singularity approximately 13.8 billion years ago and has been expanding ever since. The expansion of the universe can be observed through the redshift of light from distant galaxies.
This evidence contradicts the idea of an unchanging and unchangeable universe, as it implies that the universe has evolved and undergone significant transformations over billions of years.