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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 continuum.

  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 reformulate Albert …

  3. 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 Einstein's …

  4. 7 Mind-Bending Theories of Space-Time - sciencenewstoday.org

    Jul 26, 2025 · These seven mind-bending theories don’t just reshape our ideas of space and time—they challenge our most basic assumptions about what it means to exist. 1. Einstein’s General Theory of …

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

    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. GP-B — Einstein's Spacetime

    Space and time are relative (i.e., they depend on the motion of the observer who measures them) — and light is more fundamental than either. This is the basis of Einstein's theory of special relativity …

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

    Aug 31, 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 Einstein’s …

  8. 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 three dimensions …

  9. Einstein's Theory of General Relativity - Space.com

    Oct 29, 2024 · General relativity is physicist Albert Einstein's understanding of how gravity affects the fabric of space-time. The theory, which Einstein published in 1915, expanded the theory of special...

  10. Einstein's theory of general relativity laid the groundwork for understanding the interconnected nature of space and time, positing that they are not separate entities but rather intertwined dimensions that …