Which represents a correct match between ideas related to the formation of the universe?

glowing nebulae — dark energy

mass-energy equivalence — dark matter

structure forming in the early universe — dark matter

greatest percent of mass of universe — dark matter

structure forming in the early universe — dark matter

The correct match between ideas related to the formation of the universe is:

greatest percent of mass of universe — dark matter.

The correct match between ideas related to the formation of the universe is:

structure forming in the early universe — dark matter.

To arrive at this answer, we need to understand the concepts involved. Let's break them down:

1. Glowing Nebulae - Glowing nebulae, also known as emission nebulae, are clouds of ionized gas that emit light at various wavelengths. They are not directly related to the formation of the universe.

2. Dark Energy - Dark energy is a hypothetical form of energy that is believed to be responsible for the observed accelerated expansion of the universe. It is not directly related to the formation of the universe but rather its ongoing expansion.

3. Mass-Energy Equivalence - This principle, famously expressed by Einstein's equation E=mc², states that mass and energy are interchangeable. While this principle is crucial to understanding the relationship between mass and energy, it is not directly related to the formation of the universe.

4. Dark Matter - Dark matter is a hypothetical form of matter that does not interact with light or other forms of electromagnetic radiation. It is believed to make up a significant portion of the universe's mass, influencing the formation and evolution of cosmic structures, such as galaxies and galaxy clusters.

Given this information, the correct match between ideas related to the formation of the universe is:

Structure forming in the early universe — dark matter.

Dark matter plays a crucial role in the formation of structures in the early universe, including the gravitational collapse of gas clouds, the formation of galaxies, and the clustering of matter. It accounts for a substantial portion of the universe's mass, even though it does not interact with light or other forms of electromagnetic radiation.