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  1. Dictionary
    space
    /speɪs/

    noun

    • 1. a continuous area or expanse which is free, available, or unoccupied: "a table took up much of the space" Similar roomexpanseextentcapacity
    • 2. the dimensions of height, depth, and width within which all things exist and move: "the work gives the sense of a journey in space and time"

    verb

    • 1. position (two or more items) at a distance from one another: "the poles are spaced 3m apart"

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  3. Feb 17, 2022 · Space is the zone above and around our planet where there is no air to breathe or to scatter light. Space is a vacuum, but it is far from empty.

  4. en.wikipedia.org › wiki › SpaceSpace - Wikipedia

    Space is a three-dimensional continuum containing positions and directions. [1] . In classical physics, physical space is often conceived in three linear dimensions. Modern physicists usually consider it, with time, to be part of a boundless four-dimensional continuum known as spacetime. [2] .

  5. Feb 26, 2010 · Learn about the different meanings and aspects of space, from the physical vacuum to the cosmic background radiation. Explore how Einstein's theories of relativity challenge the concept of absolute space and time.

  6. What is space? Access the image. In space, no one can hear you scream. This is because there is no air in space – it is a vacuum. Sound waves cannot travel through a vacuum. 'Outer space' begins about 100 km above the Earth, where the shell of air around our planet disappears.

  7. May 31, 2024 · space, a boundless, three-dimensional extent in which objects and events occur and have relative position and direction. Space is treated in a number of articles. For a philosophical consideration of the subject, see metaphysics. For a discussion of the relativity of space and time, see relativity.

    • The Editors of Encyclopaedia Britannica
  8. The universe is everything, including space, time, matter and energy. Learn how old the universe is, how it expanded from a single point, and what it is made of.

  9. Mar 21, 2024 · Learn about the basic facts, structure, and composition of space, as well as some of the most exotic objects and phenomena in the universe. Find out what is space made of, how old is space, and what color is space.

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