Uncovering the Formula for Overcoming Expansion in the Expanding Universe"

Click For Summary
SUMMARY

The discussion centers on the dynamics of the expanding universe, emphasizing that galaxies are receding from each other due to cosmic expansion, yet gravity counteracts this effect at smaller scales. The key formula to understand this phenomenon is derived from the Friedmann Equations, which describe the expansion of space in the context of general relativity. The conversation highlights the balance between gravitational forces and cosmic expansion, particularly noting that not all galaxies are uniformly moving away from each other.

PREREQUISITES
  • Understanding of general relativity
  • Familiarity with the Friedmann Equations
  • Basic knowledge of cosmic expansion
  • Concept of gravitational forces in astrophysics
NEXT STEPS
  • Study the Friedmann Equations in detail
  • Explore the implications of cosmic expansion on galaxy formation
  • Investigate the role of gravity in large-scale structures of the universe
  • Learn about the relationship between dark energy and cosmic expansion
USEFUL FOR

Astronomers, astrophysicists, and students of cosmology who are interested in the mechanics of the expanding universe and the interplay between gravity and cosmic forces.

awcrowe
Messages
16
Reaction score
1
Space is expanding equally from all points

Galaxies are moving away from each other contrary to gravity.

However gravity overcomes expansion between nearby galaxies and within the galaxy and the nuclear forces overcome the expansion within matter.

What is the formula to determine what the force is to overcome the expansion
 
Space news on Phys.org

Similar threads

Undergrad The Universe is expanding with acceleration
  • · Replies 5 ·
Replies
5
Views
4K
Undergrad Expansion-Collapse cycle in cosmological structures?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Is the expansion of the universe affecting time or just space?
  • · Replies 22 ·
Replies
22
Views
3K
High School Expansion of the Universe
  • · Replies 9 ·
Replies
9
Views
3K
High School Can the "creation" of space in the Universe affect the speed of light?
  • · Replies 7 ·
Replies
7
Views
4K
Undergrad How do you get to the conclusion that there is accelerating expansion?
  • · Replies 23 ·
Replies
23
Views
4K
Undergrad Particle production in an expanding universe?
  • · Replies 6 ·
Replies
6
Views
2K
High School What is the Universe expanding into?
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad What if the Universe expands faster than the speed of light?
  • · Replies 19 ·
Replies
19
Views
5K
Undergrad Deviations of conservation laws in cosmological evolution?
  • · Replies 2 ·
Replies
2
Views
2K