Space is one of the few fundamental quantities in physics, meaning that it cannot be defined via other quantities because there is nothing more fundamental known at present. Thus, similar to the definition of other fundamental quantities (like time and mass), space is defined via measurement. Currently, the standard space interval, called a standard meter or simply meter, is defined as the distance Read the rest of this entry »
Space has a range of definitions:
One view of space is that it is part of the fundamental structure of the universe, a set of dimensions in which objects are separated and located, have size and shape, and through which they can move.
A contrasting view is that space is part of a fundamental abstract mathematical conceptual framework (together with time and number) within which we compare and quantify the distance between objects, their sizes, their shapes, and their speeds. In this view, space does not refer to any kind of entity that is a “container” that objects “move through”.
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Space is a set, with some particular properties and usually some additional structure, such as the operations of addition or multiplication, for instance. It is not a formally defined concept as such, but a generic name for a number of similar concepts, most of which generalize some abstract properties of the physical concept of space.
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This article is about the idea of space. For the space beyond Earth’s atmosphere (as in astronomy and spaceships), see Outer space. For all other uses, see Space (disambiguation).
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