Filaments are thin, thread-like structures found in various biological and physical contexts. In biology, they can refer to components of cells, such as actin filaments and microtubules, which play crucial roles in maintaining cell shape and facilitating movement. In the context of materials, filaments are often used in 3D printing, where they serve as the raw material for creating objects. In astronomy, filaments can describe large-scale structures in the universe, such as the cosmic web, which consists of vast strands of galaxies and dark matter. These filaments help to shape the distribution of matter in the universe and are essential for understanding cosmic evolution.