New Hubble Constant: Universe 180 Billion Light-Years Wide in 15.8B Years

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SUMMARY

The recent findings indicate that the Hubble constant is approximately 15% smaller than previously estimated, suggesting that the universe is about 15.8 billion years old and spans approximately 180 billion light-years in width. This raises questions about the mechanisms that allow for such vast distances without exceeding the speed of light. The discussion highlights the need for a deeper understanding of cosmic expansion and the implications of these measurements on our comprehension of the universe.

PREREQUISITES
  • Understanding of the Hubble constant and its significance in cosmology
  • Familiarity with concepts of cosmic expansion and the Big Bang theory
  • Basic knowledge of light-year as a unit of distance in astronomy
  • Awareness of current debates in astrophysics regarding the age and size of the universe
NEXT STEPS
  • Research the implications of a smaller Hubble constant on cosmological models
  • Explore the concept of cosmic inflation and its role in the universe's expansion
  • Investigate the physics behind the speed of light and its limitations in cosmic terms
  • Read about recent advancements in observational astronomy techniques that measure cosmic distances
USEFUL FOR

Astronomers, astrophysicists, and science enthusiasts interested in the latest developments in cosmology and the understanding of the universe's size and age.

tuna_wasabi
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Just got through reading http://www.space.com/scienceastronomy/060807_mm_huble_revise.html" about findings that suggest the Hubble constant is about 15% smaller than previously believed. From the article:

The new finding implies that the universe is. . . about 15.8 billion years old and about 180 billion light-years wide.

My question is this: How does the universe get 180 billion light years wide in only 16 billion years without having matter travel faster than light? I'm sure there's a sensical explanation, I just have no idea what it is.

P.S. Sorry if I'm posting in the wrong forum. Wasn't sure if I should post here or in the Other Sciences (i.e. astronomy) forum.
 
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