Size of universe and quantity of mass

  • Context: Graduate 
  • Thread starter Thread starter kuartus4
  • Start date Start date
  • Tags Tags
    Mass Universe
Click For Summary
SUMMARY

The discussion centers on the concept of the universe's size and its mass-energy content. It posits the possibility of an infinite universe containing a finite amount of mass and energy, while acknowledging the prevailing belief that the universe is homogeneous on large scales. Evidence supporting this homogeneity is drawn from observational data, reinforcing the idea that the universe exhibits uniformity in its distribution of mass and energy.

PREREQUISITES
  • Understanding of cosmology principles
  • Familiarity with the concept of homogeneity in the universe
  • Knowledge of observational astronomy techniques
  • Basic grasp of mass-energy equivalence
NEXT STEPS
  • Research the implications of an infinite universe on cosmological models
  • Explore the concept of cosmic homogeneity and isotropy
  • Study observational techniques used in cosmology, such as redshift surveys
  • Investigate the mass-energy content of the universe using the Lambda Cold Dark Matter model
USEFUL FOR

Astronomers, cosmologists, physics students, and anyone interested in the fundamental structure and composition of the universe.

kuartus4
Messages
25
Reaction score
0
If the universe is infinite in size, is possible that it only have a finite amount of mass/energy with the rest of the universe being completely empty?
 
Space news on Phys.org
I can't think of a precise reason why it's impossible, but it's generally believed that the universe is the same everywhere (averaged over appropriately large scales), and there is good evidence that this is true in our observational universe.
 

Similar threads

High School Does an infinite universe contradict a Big Bang origin?
  • · Replies 65 ·
3
Replies
65
Views
10K
High School Big Bang and Infinite Universe
  • · Replies 20 ·
Replies
20
Views
3K
High School Infinite universe, infinite volume from the beginning?
  • · Replies 22 ·
Replies
22
Views
2K
High School Big Bang: Size of the Universe at Different Epochs
  • · Replies 58 ·
2
Replies
58
Views
8K
Graduate Largest Galaxy In An Infinite Universe
  • · Replies 12 ·
Replies
12
Views
3K
High School How did the universe start and evolve into what it is today?
  • · Replies 24 ·
Replies
24
Views
3K
Undergrad Is there any way in the future to determine the Universe's size?
  • · Replies 58 ·
2
Replies
58
Views
8K
High School Independent Inflationary Regions in an Infinite Universe?
  • · Replies 28 ·
Replies
28
Views
2K
Undergrad The Boundary of the Observable Universe
  • · Replies 44 ·
2
Replies
44
Views
7K
High School Estimates — True Size of the Universe?
  • · Replies 33 ·
2
Replies
33
Views
8K