Answer:
The major flow of this hypothesis was that the Sun could last only about 25 million years.
Explanation:
Gravitational contraction:
- It is the process of a cloud's gravity overcoming its internal pressure and causing a collapse.
- Before the atoms inside will fuse, the core temperature of an object must reach a minimum temperature.
If the source of the Sun's energy is gravitational contraction,
from this process we could say that, the Sun could last only about 25 million years, which is far less than the age of Earth. But geologists already had evidence the Earth was much older than that.
So, the major flow of this hypothesis was that the Sun could last only about 25 million years.
learn more about gravitational contraction here:
https://brainly.com/question/15969901
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