Definition
Intergalactic refers to the space or region between galaxies. It's the vast, often seemingly empty, expanse that separates galaxies from one another. While mostly empty, intergalactic space isn't completely devoid of matter; it contains sparse amounts of gas and dust. Think of it as the cosmic 'no man's land' between major cities (galaxies). Scientists study intergalactic space to understand how galaxies interact and evolve.