Which statement below does NOT fit the model of the Big Bang and the subsequent changes in the universe?
The universe was denser previously than it is now.
The universe was hotter previously than it is now.
The galaxies are moving closer together as time progresses.
The universe is continuing to expand, even after the Big Bang.
The galaxies are moving closer together as time progresses.
The statement that does NOT fit with the model of the Big Bang and the subsequent changes in the universe is: "The galaxies are moving closer together as time progresses." According to the model, the expansion of the universe causes galaxies to move away from each other, not closer together.
To determine which statement does not fit the model of the Big Bang and the subsequent changes in the universe, let's analyze each statement:
1. The universe was denser previously than it is now.
According to the Big Bang model, the universe started from an extremely dense and compact state, often referred to as a singularity. As the universe expanded, it became less dense. Therefore, this statement aligns with the model.
2. The universe was hotter previously than it is now.
During the early stages of the universe, immediately after the Big Bang, the temperature was incredibly high. As the universe expanded and cooled down through time, the average temperature decreased. So, this statement also fits the Big Bang model.
3. The galaxies are moving closer together as time progresses.
This statement does not align with the model of the Big Bang. In fact, the opposite is true. Due to the expansion of the universe, most galaxies are actually moving away from each other, resulting in an overall increase in the separation between them. This phenomenon is known as cosmic expansion or the Hubble expansion.
4. The universe is continuing to expand, even after the Big Bang.
According to the Big Bang model, the initial expansion triggered by the explosion of the singularity continues to this day. The universe is still expanding, and this expansion is supported by various astronomical observations, such as the redshift of distant galaxies. Therefore, this statement is consistent with the Big Bang model.
Based on the analysis, the statement that does NOT fit the model of the Big Bang and the subsequent changes in the universe is:
- The galaxies are moving closer together as time progresses.