Nasa

Space, often referred to as outer space, is the vast expanse that exists beyond Earth's atmosphere. It is a near-perfect vacuum characterized by the absence of air, matter, and atmosphere. In space, there is no atmosphere to scatter light, so the sky appears black. It contains celestial bodies like stars, planets, moons, asteroids, comets, and galaxies, along with various forms of energy such as radiation and cosmic rays. Space is not only a subject of scientific exploration but also a source of fascination and inspiration for humans, leading to advancements in astronomy, cosmology, and space technology.