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  1. Spacetime - Wikipedia

    In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional …

  2. Space-time | Definition & Facts | Britannica

    Nov 11, 2025 · space-time, in physical science, single concept that recognizes the union of space and time, first proposed by the mathematician Hermann Minkowski in 1908 as a way to …

  3. What Is Spacetime? The Four-Dimensional Fabric of Reality

    May 24, 2025 · Albert Einstein, through his groundbreaking work on relativity, dramatically changed our understanding of space and time. The key insight he brought was that space and …

  4. What is space-time? - Live Science

    May 20, 2021 · Space-time is the conceptual model that best explains how the universe works. (Image credit: Shutterstock) The fabric of space-time is a conceptual model combining the …

  5. What Is Spacetime Really Made Of? - Scientific American

    Feb 1, 2022 · Specifically, spacetime might emerge from the materials we usually think of as living in the universe—matter and energy itself.

  6. What is spacetime? - BBC Sky at Night Magazine

    May 28, 2025 · What is spacetime, and is time really all a matter of perspective? Find out in our beginner's guide to the complexities of time and space.

  7. Spacetime | Brilliant Math & Science Wiki

    In physics, spacetime is any mathematical model that combines space and time into a single continuum. It is a mathematical concept used to refer to all points of space and time and their …

  8. Space-TimeThe Physics Hypertextbook

    They describe a universe consisting of bodies moving with clockwork predicatability on a stage of absolute space and time. They were used to create the machines that launched two waves of …

  9. GP-B — Einstein's Spacetime

    Gravity feels strongest where spacetime is most curved, and it vanishes where spacetime is flat. This is the core of Einstein's theory of general relativity, which is often summed up in words as …

  10. Understanding Spacetime: Concepts and Implications

    Understanding spacetime is no small feat—it’s the bedrock of modern physics, intertwining our grasp of both space and time into a seamless fabric. The significance of this topic cannot be …