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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

    Sep 26, 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 · To understand spacetime is to grasp that reality is fundamentally four-dimensional: three dimensions of space plus one dimension of time, all interlaced. One of the …

  4. What, exactly, is space-time? - Phys.org

    Aug 25, 2025 · Few ideas in modern science have reshaped our understanding of reality more profoundly than space-time—the interwoven fabric of space and time at the heart of Albert …

  5. What Is Space-Time? Einstein's Theory of Time and Gravity …

    Jul 31, 2025 · What is space-time? Depending on how fast you're moving or how close you are to Earth's gravity can change the way time feels.

  6. Space-time, the interwoven fabric of space and time - EarthSky

    Aug 31, 2025 · Space-time is frequently described as the fabric of reality. In some accounts, this fabric is referred to as a fixed, four-dimensional block universe, a complete map of all events, …

  7. What, exactly, is space-time? - The Conversation

    Aug 24, 2025 · Few ideas in modern science have reshaped our understanding of reality more profoundly than space-time — the interwoven fabric of space and time at the heart of Albert …

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

    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.

  9. What is Space-Time and How Does it Affect Our Reality?

    Apr 9, 2025 · Space-time unifies three dimensions of space with the dimension of time into a four-dimensional continuum. Theories in physics are exploring that space and time may not be …

  10. Space-TimeThe Physics Hypertextbook

    At speeds approaching the speed of light, objects get shorter and time slows down. This means that space and time are one unified, dynamic thing — space-time.