DM (Dark Matter) Halo

A dark matter halo is an invisible, massive structure that surrounds galaxies. It is composed of dark matter, a mysterious substance that doesn’t emit, absorb, or reflect light, making it undetectable by traditional telescopes. Despite its invisibility, dark matter exerts gravitational pull, helping to hold galaxies together and explaining why galaxies rotate faster than visible matter alone would allow. The halo extends well beyond the visible edges of a galaxy, creating a crucial component in understanding the universe’s large-scale structure and the behavior of galaxies.