The universe is constantly growing and changing. A great explosion caused the origin of the universe. The nature of the universe has always been the same. Light moving from the center of the universe appears red.
Which of the following is a characteristic of the "steady state theory" of the universe?

Options:
- The universe is constantly growing and changing.
- A great explosion caused the origin of the universe.
- The nature of the universe has always been the same.
- Light moving from the center of the universe appears red.

The nature of the universe has always been the same.