What role does dark matter play in the formation of cosmic structures?

Dark matter plays a crucial role in the formation of cosmic structures by providing the gravitational framework necessary for the development of galaxies and larger structures. While visible matter, such as stars and gas, makes up only a small portion of the universe's mass, dark matter constitutes about 27% of the universe. It does not emit, absorb, or reflect light, making it invisible to traditional telescopes, but its presence is inferred from its gravitational effects on visible matter.

As galaxies form, their evolution is influenced by the gravitational pull of dark matter. The gravitational attraction of dark matter helps to hold galaxies together, preventing them from dispersing due to their rotational motions. Additionally, dark matter's gravitational influences help pull regular matter together, facilitating the formation of galaxies and clusters of galaxies over time.

The idea that dark matter is irrelevant in current cosmic models is not supported by observations, as strong evidence from galaxy rotation curves, gravitational lensing, and the cosmic microwave background all suggest its significant impact. Similarly, dark matter does not represent a source of radiation energy; rather, it behaves differently than ordinary matter, primarily influencing cosmic structures through its mass and gravitational effects. This is why the role of dark matter in holding galaxies together and aiding in structure formation is integral to our