Question

what triggered the cyclic model of the origin of the universe? (1 point)

some scientists began to use telescopes and mathematics to study the universe.

some scientists found that the amount of radiation in space is not consistent with an explosion.

some scientists think that the universe will not keep expanding forever.

some scientists argue that the planets do not orbit in circles around the sun.

Explanation:

To determine the trigger for the cyclic model of the universe's origin, we analyze each option:

• The first option (using telescopes/math) is about study methods, not the cyclic model's trigger.
• The second option (radiation inconsistent with explosion) relates to the Big Bang model's challenges, not the cyclic model's trigger.
• The third option: The cyclic model (e.g., cyclic cosmology) is tied to the idea that the universe may not expand forever. If scientists think the universe won't expand infinitely, it could lead to a cyclic idea (contraction followed by another expansion, etc.).
• The fourth option (planets' orbits) is about planetary motion, irrelevant to the universe's cyclic origin model.

Answer:

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