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  1. Cincinnati | Ohio City Guide & History | Britannica

    Dec 22, 2025 · Cincinnati, city, seat of Hamilton county, southwestern Ohio, U.S. It lies along the Ohio River opposite the suburbs of Covington and Newport, Kentucky, 15 miles (24 km) east of the …

  2. Cosmology | Definition & Facts | Britannica

    Nov 14, 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.

  3. Astronomy - Cosmology, Universe, Stars | Britannica

    Dec 19, 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 model is the …

  4. Cosmology - Big Bang, Expansion, Dark Energy | Britannica

    Nov 14, 2025 · Cosmology - Big Bang, Expansion, Dark Energy: To derive his 1917 cosmological model, Einstein made three assumptions that lay outside the scope of his equations.

  5. 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.

  6. Bing | Description & History | Britannica Money

    3 days ago · Bing, search engine launched in 2009 by the American software company Microsoft Corporation. Microsoft’s previous search engine, Live Search, from the time of its release in 2006 …

  7. universe - Students | Britannica Kids | Homework Help

    Cosmology is the branch of science that studies the universe as a whole. It brings together the natural sciences, particularly astronomy and physics, in a joint effort to understand such aspects as the …

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

    Dec 19, 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 activity to a …

  9. Cosmology - Expansion, Universe, Big Bang | Britannica

    Nov 14, 2025 · Cosmology - Expansion, Universe, Big Bang: When the universe is viewed in the large, a dramatic new feature, not present on small scales, emerges—namely, the cosmological expansion.

  10. Cosmology - Finite, Infinite, Universe | Britannica

    Nov 14, 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 thought by …