Space science is the logical investigation of divine items, (for example, stars, planets, comets, and systems) and wonders that begin outside the Earth's climate, (for example, the vast foundation radiation. In astronomy an astronomical object or celestial object is a naturally occurring physical entity, association, or structure that exists in the observable universe.In astronomy, the terms object and body are often used interchangeably. However, an astronomical body or celestial body is a single, tightly bound, contiguous entity, while an astronomical or celestial object is a complex, less cohesively bound structure, which may consist of multiple bodies or even other objects with substructures.