Question about recent NASA artical

  • Context: Undergrad 
  • Thread starter Thread starter dubsed
  • Start date Start date
  • Tags Tags
    Nasa
Click For Summary
SUMMARY

The forum discussion centers on a NASA article regarding cosmic expansion, specifically addressing the concept of a low-density bubble in the universe. Participants clarify that the term "low density" refers to a density lower than the expected average, suggesting that the universe's expansion implies a central position within a low-density region, with density increasing at greater distances. This interpretation aligns with current cosmological models and the understanding of cosmic structure.

PREREQUISITES
  • Basic understanding of cosmology and the universe's expansion
  • Familiarity with the concept of cosmic density and its implications
  • Knowledge of the Hubble Space Telescope's contributions to cosmic research
  • Awareness of scientific hypothesis formulation and interpretation
NEXT STEPS
  • Research the implications of cosmic density variations on galaxy formation
  • Explore the Hubble Space Telescope's findings on cosmic expansion
  • Learn about the methodologies used in cosmological hypothesis testing
  • Investigate the concept of dark energy and its role in the universe's expansion
USEFUL FOR

Astronomers, astrophysicists, students of cosmology, and anyone interested in the dynamics of cosmic expansion and structure.

dubsed
Messages
24
Reaction score
0
I have a question about a recent NASA article Titled http://www.nasa.gov/mission_pages/hubble/science/cosmic-expansion.html" .

Is it safe to assume that when hypothesis talk about a low density bubble that they mean a density lower than expected? Meaning that they have taken into account that if the universe is expanding one would expect to be at the exact center of a low density area with density increasing as one views farther away.
 
Last edited by a moderator:
Space news on Phys.org
I think that is what they mean.
 

Similar threads

Undergrad 3 questions about a paper on density fluctuations in the Universe
  • · Replies 1 ·
Replies
1
Views
3K
High School Does a contracting universe destroy its black holes?
  • · Replies 29 ·
Replies
29
Views
3K
Graduate Infinite Universe: What does it mean?
  • · Replies 32 ·
2
Replies
32
Views
8K
Undergrad Some questions about Cosmic Inflation
  • · Replies 4 ·
Replies
4
Views
5K
Undergrad Some questions about Cosmic Microwave Background radiation
  • · Replies 13 ·
Replies
13
Views
7K
Undergrad New possible explanation for Hubble redshift
  • · Replies 15 ·
Replies
15
Views
4K
Undergrad What does the cosmic inflation theory actually say about flatness?
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Questions about the topology of the universe
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad How do you get to the conclusion that there is accelerating expansion?
  • · Replies 23 ·
Replies
23
Views
4K
High School Why doesn't cosmic inflation violate conservation of energy?
  • · Replies 3 ·
Replies
3
Views
4K