Intergalactic Gas

Intergalactic gas refers to the thin, diffuse material composed mainly of hydrogen and helium that exists in the space between galaxies. This gas fills the vast regions of the universe, serving as the raw material for galaxy formation and evolution. It is often extremely sparse, making it challenging to detect, but it plays a crucial role in the cosmic lifecycle by providing the fuel for new stars and galaxies to develop. Studying intergalactic gas helps scientists understand the large-scale structure of the universe and the processes shaping cosmic history.