Space

Space is the boundless three-dimensional extent in which objects and events have relative position and direction. In classical physics, physical space is often conceived in three linear dimensions, although modern physicists usually consider it, with time, to be part of a boundless four-dimensional continuum known as spacetime.

Definition

In mathematics, "space" is a set (sometimes called a universe) with some added structure. While modern physics uses concepts such as space-time to understand the universe, philosophical discussions of space often focus on questions about its nature and whether it is truly infinite.

Physics

In physics, space is a boundless three-dimensional extent in which objects and events occur and have relative position and direction. The concept of space is considered to be of fundamental importance to an understanding of the physical universe.

Philosophy

In philosophy, the nature of space has been a topic of discussion since the era of the ancient Greek philosopher Parmenides and pre-Socratic philosophers.

See also

• Outer space
• Space exploration
• Space-time
• Space (mathematics)
• Space (philosophy)

References

Space Resources
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