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  1. Cosmology | Definition & Facts | Britannica

    Sep 5, 2025 · Cosmology, the field of study that brings together the natural sciences, particularly astronomy and physics, in a joint effort to understand the physical universe as a unified whole.

  2. Importance of cosmology and its three eras | Britannica

    cosmology, Field of study that brings together the natural sciences, especially astronomy and physics, in an effort to understand the physical universe as a unified whole.

  3. Astronomy - Cosmology, Universe, Stars | Britannica

    Sep 23, 2025 · Cosmology is the scientific study of the universe as a unified whole, from its earliest moments through its evolution to its ultimate fate. The currently accepted cosmological …

  4. universe - Kids | Britannica Kids | Homework Help

    The universe is also called the cosmos. Cosmology is the branch of science that studies the universe as a whole. Astronomy is another name for the study of the universe. Scientists use …

  5. Cosmology - Finite, Infinite, Universe | Britannica

    Sep 5, 2025 · Cosmology - Finite, Infinite, Universe: An issue that arises when one contemplates the universe at large is whether space and time are infinite or finite. After many centuries of …

  6. Astronomy | Definition, History, Discoveries, & Facts | Britannica

    Sep 23, 2025 · Concerned with phenomena on the largest scale is cosmology, the study of the evolution of the universe. Astrophysics has transformed cosmology from a purely speculative …

  7. Hubble constant | Definition, Value, Units, & Facts | Britannica

    Hubble constant, in cosmology, constant of proportionality in the relation between the velocities of remote galaxies and their distances. It expresses the rate at which the universe is expanding. …

  8. Cosmological Argument, Creationism, Theology - Britannica

    Oct 17, 2025 · Christianity - Cosmological Argument, Creationism, Theology: Aquinas gave the first-cause argument and the argument from contingency—both forms of cosmological …

  9. Anaximander and his contribution to cosmology | Britannica

    Cosmology, field of study that brings together the natural sciences, particularly astronomy and physics, in a joint effort to understand the physical universe as a unified whole.

  10. Anthropic principle | Cosmology, Physics & Philosophy | Britannica

    Anthropic principle, in cosmology, any consideration of the structure of the universe, the values of the constants of nature, or the laws of nature that has a bearing upon the existence of life.