Intergalactic

The term intergalactic refers to the space that exists between galaxies. It is derived from the Latin words inter, meaning "between," and galacticus, meaning "of the Milky Way" or "pertaining to a galaxy." In Hebrew, the term is translated as בין-גלקטי (beyn-galakti). In Spanish, it is intergaláctico, and in French, it is intergalactique. The intergalactic space is characterized by its extremely low density, containing mostly hydrogen gas, as well as dark matter and cosmic rays. This vast expanse is significantly emptier than the space within galaxies, which are densely packed with stars, planets, and other celestial bodies. The study of intergalactic space is crucial for understanding the large-scale structure of the universe, galaxy formation, and the distribution of matter and energy on a cosmic scale.