Large-scale structure of the cosmos

The cosmos is like a really big puzzle with many tiny pieces. Imagine a puzzle where each piece is a galaxy or a group of galaxies. These galaxies are arranged in a certain pattern that we call large-scale structure.

Think of a big city like New York. In this city, there are many neighborhoods and buildings. These neighborhoods and buildings are arranged in a certain pattern that we call structure. Similarly, in the cosmos, there are many galaxies and galaxy clusters arranged in a certain pattern that we call structure.

Scientists have observed that the galaxies in the cosmos are not randomly arranged, but rather, they form clusters and filaments. These clusters and filaments are the large-scale structure of the cosmos.

The clusters are groups of galaxies that are close to each other and are held together by gravity. The filaments are long, thin structures that connect clusters of galaxies. These structures are made up of dark matter and gas.

Dark matter is a mysterious substance that we cannot see, but we know it exists because of its effects on gravity. It acts as a glue that holds the galaxies together in clusters and filaments.

So, in summary, the large-scale structure of the cosmos refers to the pattern of galaxies and galaxy clusters arranged in clusters and filaments, held together by the mysterious substance called dark matter.