What triggered the cyclic model of the origin of the universe?

Question

1. Some scientists found that the amount of radiation in space is not consistent with an explosion.
2. Some scientists think that the universe will not keep expanding forever.
3. Some scientists began to use telescopes and mathematics to study the universe.
4. Some scientists argue that the planets do not orbit in circles around the sun.

Answer 1

The cyclic model of the universe is primarily influenced by the idea that the universe undergoes repeated expansions and contractions, rather than a singular event like the Big Bang. Among the provided options, the most relevant trigger for the cyclic model would be:

2. Some scientists think that the universe will not keep expanding forever.

This belief stems from the exploration of different cosmological models, which suggest that gravitational forces could eventually halt the expansion and lead to a contraction phase, allowing for a cyclic nature of the universe.