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Physical cosmology is the branch of physics and astrophysics that deals with the study of the physical origins and evolution of the universe. It also includes the study of the nature of the universe on a large scale.
- History of Cosmology & Astronomy
- Cosmological Missions & Instruments
- Common Cosmological Questions
- Additional Resources
- Bibliography
Humanity's understanding of the universe has evolved significantly over time. In the early history of astronomy, Earth was regarded as the center of all things, with planets and stars orbiting it. In the 16th century, Polish scientist Nicolaus Copernicus suggested that Earth and the other planets in the solar system in fact orbited the sun, creatin...
Launched in November 1989, NASA's Cosmic Background Explorer(COBE) took precise measurements of radiation across the sky. The mission operated until 1993. Although NASA's Hubble Space Telescope is probably best known for its astounding images, a primary missionwas cosmological. By more accurately measuring the distances to Cepheid variables, stars ...
What came before the Big Bang? Because of the enclosed and finite nature of the universe, we cannot see "outside" of our own universe. Space and time began with the Big Bang. While there are a number of speculations about the existence of other universes, there is no practical way to observe them, and as such there will never be any evidence for (o...
You can read more about cosmology and the foundations of the Big Bang model in Wilkinson Microwave Anisotropy Probe's Introduction to Cosmology by NASA. For more answers to common cosmology questions, go to NASA's Ask an Astrophysicist page.
"Edwin Hubble and the Expanding Universe". Scientific American (1993). https://www.jstor.org/stable/24941551 "Illuminating the Dark Universe". Science (2003). https://www.science.org/doi/10.1126/science.302.5653.2038 "The Collision Time of the Observable Universe is 13.8 Billion Years per Planck time: A New Understanding of the Cosmos based on Coll...
Nov 22, 2024 · 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. When the universe is viewed in the large, a dramatic new feature, not present on small scales, emerges—the cosmological expansion.
- Frank H. Shu
Cosmology is the study of our universe with scientific approaches, including its origin, structure, and evolution. It is a field that combines principles from physics, astronomy, mathematics, and philosophy to understand the fundamental nature of the cosmos.
Sep 26, 2017 · Cosmology (the study of the physical universe) is a science that, due to both theoretical and observational developments, has made enormous strides in the past 100 years.
- Christopher Smeenk, George Ellis
- 2017
May 13, 2024 · Cosmology is the broad study that seeks to comprehend the universe as a coherent physical system, including its history, structure, governing rules, and ultimate fate. It has far-reaching ramifications for our understanding of physical reality and humanity’s place in the universe.
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Cosmology studies how the history of the universe led to the stars, galaxies, and other features we can observe today. Cosmology is the study of the origin, development, structure, history, and future of the entire universe. In modern science, cosmology is divided into two branches.
