Earth is fundamentally part of space, as it exists within the broader universe. The perception of Earth as separate from space depends on the reference point used. From a ground-level perspective, space is everything outside of Earth. However, from a scientific viewpoint, Earth is just another object within the vast expanse of space. The term "space" refers to the areas not occupied by physical objects, meaning that even when standing on Earth, one is still within space. Illustratively, if Earth occupies a portion of a three-dimensional space, it can be considered part of that space, highlighting the interconnectedness of Earth and the universe.