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   Why is cosmology important?

   • 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 modern science capable of predictions that can be tested. Nickel-iron meteorite, from Canyon Diablo, Arizona.

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

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   Why is cosmology complicated over long periods of time?

   • Over long periods of time, the dynamics are complicated by general relativity, dark energy, inflation, etc., as explained above. The Hubble length or Hubble distance is a unit of distance in cosmology, defined as — the speed of light multiplied by the Hubble time. It is equivalent to 4,420 million parsecs or 14.4 billion light years.

   Hubble's law - Wikipedia

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   What is Hubble's law in cosmology?

   • Hubble's law, also known as the Hubble–Lemaître law, is the observation in physical cosmology that galaxies are moving away from Earth at speeds proportional to their distance. In other words, the farther they are, the faster they are moving away from Earth.

   Hubble's law - Wikipedia

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   What happens if the cosmological principle fails?

   • If the cosmological principle fails (see "Violations of the cosmological principle" in the "Lambda-CDM model" article), then the existing interpretations of the Hubble constant and the Hubble tension have to be revised, which might resolve the Hubble tension.

   Hubble's law - Wikipedia

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2. en.wikipedia.org › wiki › Hubble's_lawHubble's law - Wikipedia

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   2 days ago · Hubble's law, also known as the Hubble–Lemaître law, is the observation in physical cosmology that galaxies are moving away from Earth at speeds proportional to their distance. In other words, the farther they are, the faster they are moving away from Earth.

3. www.sciencedaily.com › news › space_timeCosmology News -- ScienceDaily

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   3 days ago · Cosmology news. From deep observations of the far reaches of space and time to spectroscopic analysis and more. Read cosmology articles and consider how astronomers view the origin of the...

4. Videos

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5. www.livescience.com › space › cosmologyJames Webb telescope discovers earliest galaxy in the known ...

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   5 days ago · Astronomy. Cosmology. James Webb telescope discovers earliest galaxy in the known universe — and its shockingly big. News. By Brandon Specktor. published 30 May 2024. The James Webb Space...

6. www.kicc.cam.ac.uk › news › earliest-most-distantEarliest, most distant galaxy discovered with James Webb ...

   www.kicc.cam.ac.uk › news › earliest-most-distant

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   5 days ago · Large Scale Structure and Precision Cosmology; Epoch of Cosmic Reionization; Formation and Evolution of Galaxies and Supermassive Black Holes. Formation and Evolution of Galaxies and Supermassive Black Holes overview; Observation of the most distant galaxies; AGN in dwarf galaxies; Dwarf galaxy formation with cosmic rays, radiation and magnetic ...

7. www.worldsciencefestival.com › programs › theThe Biggest Mysteries of the Big Bang | World Science Festival

   www.worldsciencefestival.com › programs › the

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   2 days ago · Scientists can now describe the unfolding cosmos with unprecedented precision, yet major mysteries remain, including the nature of expanding space, the need for dark matter and dark energy, and the possibility that our universe is but one of many separate realities.

8. www.britannica.com › science › astronomyAstronomy | Definition, History, Discoveries, & Facts ...

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   3 days ago · Astronomy is the study of objects and phenomena beyond Earth, whereas cosmology is a branch of astronomy that studies the origin of the universe and how it has evolved. For example, the big bang, the origin of the chemical elements, and the cosmic microwave background are all subjects of cosmology.

9. ras.ac.uk › events-and-meetings › friends-rasNew frontiers in cosmology with Cosmic Microwave Background ...

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   5 days ago · Prof. Calabrese works on observational cosmology using the Cosmic Microwave Background to study the origins, content and evolution of the universe, and in 2022 she was awarded the Institute of Physics Fred Hoyle Medal and Prize, and the Learned Society of Wales Dillwyn Medal for STEMM, for her distinguished work on the CMB. Venue Address.