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Cosmology Forum

Join in expert discussion on topics revolving around cosmology. Cosmology is the origin, evolution, structure and eventual fate of the universe.

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Calculating Neutrino Binding in Gravitational Potentials

Oct 23, 2009 · Replies 3 · Oct 24, 2009

Replies: 3

Views: 2K

Big Brain Theory: Have Cosmologists Lost Theirs?

Jan 15, 2008 · Replies 18 · Oct 24, 2009

Replies: 18

Views: 5K

Poll

Gravity and developments in GR after WMAP 5 year data

Apr 2, 2008 · Replies 42 · Oct 24, 2009

2

Replies: 42

Views: 8K

Understanding Time: Special Relativity & Earth's Reference Frame

Oct 12, 2009 · Replies 2 · Oct 23, 2009

Replies: 2

Views: 2K

What is the boundary of the observable universe in the Milne universe?

Oct 21, 2009 · Replies 5 · Oct 23, 2009

Replies: 5

Views: 3K

The equation of state of radiation

Oct 16, 2009 · Replies 5 · Oct 23, 2009

Replies: 5

Views: 8K

Size of the Universe: Estimate Conflicts & Layman's Guide

Aug 1, 2009 · Replies 18 · Oct 22, 2009

Replies: 18

Views: 6K

Why Do Distant Galaxies Appear Further Apart Than Expected?

Oct 14, 2009 · Replies 27 · Oct 22, 2009

Replies: 27

Views: 4K

How Do Photons from Very Old Galaxies Reach the Hubble Telescope?

Oct 22, 2009 · Replies 1 · Oct 22, 2009

Replies: 1

Views: 2K

Big Bang: Definition of Universe Area

Oct 20, 2009 · Replies 5 · Oct 21, 2009

Replies: 5

Views: 4K

A snip making fun of the concept of dark matter- why is this incorrect?

Oct 14, 2009 · Replies 30 · Oct 20, 2009

2

Replies: 30

Views: 4K

Did the universe expand from a point?

Oct 19, 2009 · Replies 5 · Oct 20, 2009

Replies: 5

Views: 3K

Big Bang - No Single point of Expansion

Sep 29, 2009 · Replies 67 · Oct 18, 2009

3

Replies: 67

Views: 15K

Dark energy might be modif'n of GR different from cosmo constant.

Oct 12, 2009 · Replies 21 · Oct 18, 2009

Replies: 21

Views: 5K

Cosmic micro-wave background, also cosmic gravitation-wave background?

Oct 14, 2009 · Replies 8 · Oct 17, 2009

Replies: 8

Views: 5K

Calc. Temperature of CMB | Textbook Info

Oct 14, 2009 · Replies 14 · Oct 16, 2009

Replies: 14

Views: 6K

Where do Quantum corrections matter?

Oct 8, 2009 · Replies 8 · Oct 11, 2009

Replies: 8

Views: 2K

Unit transformation of Cosmological Constant ?

Oct 6, 2009 · Replies 5 · Oct 11, 2009

Replies: 5

Views: 2K

Which of 4 Universe Scenarios Do You Believe In?

Oct 10, 2009 · Replies 6 · Oct 11, 2009

Replies: 6

Views: 3K

Antimatter's role in the architecture of the universe

Oct 8, 2009 · Replies 36 · Oct 11, 2009

2

Replies: 36

Views: 6K

What Is the Weak Field Limit?

Oct 9, 2009 · Replies 5 · Oct 10, 2009

Replies: 5

Views: 5K

Why is it customary to assume that the vacuum energy contribution is neglible?

Oct 1, 2009 · Replies 13 · Oct 10, 2009

Replies: 13

Views: 3K

Witnessing the Cosmic Horizon: A Speedy Adventure

Oct 8, 2009 · Replies 9 · Oct 9, 2009

Replies: 9

Views: 4K

Is Aeronautics the Future for Aspiring Astrophysicists?

Oct 8, 2009 · Replies 1 · Oct 8, 2009

Replies: 1

Views: 5K

Dark Energy & the Law of Thermodynamics

Oct 1, 2009 · Replies 31 · Oct 8, 2009

2

Replies: 31

Views: 5K

Why do physicists claim the universe came from nothing?

Oct 2, 2009 · Replies 6 · Oct 8, 2009

Replies: 6

Views: 3K

Theoritically how far can one see in the universe

Sep 5, 2009 · Replies 29 · Oct 7, 2009

Replies: 29

Views: 7K

Space Expansion: Is Gravity the Cause?

Oct 4, 2009 · Replies 2 · Oct 5, 2009

Replies: 2

Views: 2K

Why does power spectrum is calculated at the radiation/matter epochs?

Oct 2, 2009 · Replies 1 · Oct 3, 2009

Replies: 1

Views: 2K

Why do astronauts describe the smell of space as strong, metallic, and unique?

Sep 7, 2009 · Replies 10 · Oct 2, 2009

Replies: 10

Views: 4K

How Does the Big Bang Theory Address Apparent Violations of Established Physics?

Sep 26, 2009 · Replies 26 · Oct 1, 2009

Replies: 26

Views: 5K

Is the Universe Fine-Tuned for Androids?

Sep 30, 2009 · Replies 10 · Oct 1, 2009

Replies: 10

Views: 3K

Why Can't We See a Parallel Universe?

Sep 28, 2009 · Replies 3 · Sep 29, 2009

Replies: 3

Views: 2K

How Do Gravitational Waves Impact a Solid Sphere of Mass?

Sep 23, 2009 · Replies 12 · Sep 28, 2009

Replies: 12

Views: 4K

The Hubble Constant and Natural Unit

Sep 26, 2009 · Replies 8 · Sep 28, 2009

Replies: 8

Views: 6K

Dark Energy & QCD: Federico Urban & Ariel Zhitnitsky's Solution?

Sep 27, 2009 · Replies 1 · Sep 28, 2009

Replies: 1

Views: 2K

Does flat Universe have a center?

Sep 25, 2009 · Replies 3 · Sep 27, 2009

Replies: 3

Views: 3K

Water on the Moon: NASA and ISRO Team Up to Confirm H20 Existence

Sep 24, 2009 · Replies 6 · Sep 26, 2009

Replies: 6

Views: 2K

Difference between Dark Energy and Cosmological Constant

Sep 22, 2009 · Replies 6 · Sep 24, 2009

Replies: 6

Views: 6K

Black hole merger - what would happen if

Sep 24, 2009 · Replies 2 · Sep 24, 2009

Replies: 2

Views: 2K

Is Time Synchronous Throughout the Universe?

Sep 21, 2009 · Replies 8 · Sep 24, 2009

Replies: 8

Views: 3K

Cosmology: Milky Way Formation in a Month?

Sep 19, 2009 · Replies 14 · Sep 21, 2009

Replies: 14

Views: 3K

The Mechanism of the Cosmological Redshift

Jul 6, 2009 · Replies 29 · Sep 19, 2009

Replies: 29

Views: 6K

History and geometry of flat universe

Sep 18, 2009 · Replies 10 · Sep 19, 2009

Replies: 10

Views: 4K

What are the preliminary results from the Planck First Light Survey?

Sep 17, 2009 · Replies 3 · Sep 17, 2009

Replies: 3

Views: 2K

Offshoot from 'Theoretically how far can one see in the universe'

Sep 8, 2009 · Replies 41 · Sep 16, 2009

2

Replies: 41

Views: 7K

Can math truly describe our universe and it's phsical being?

Sep 14, 2009 · Replies 10 · Sep 16, 2009

Replies: 10

Views: 3K

Chaotic Eternal Inflation vs. False Vacuum Eternal Inflation

Sep 15, 2009 · Replies 1 · Sep 15, 2009

Replies: 1

Views: 8K

What is the most massive galaxy cluster in the universe?

Sep 12, 2009 · Replies 7 · Sep 15, 2009

Replies: 7

Views: 4K

More Hawking radiation misinformation

Sep 11, 2009 · Replies 6 · Sep 15, 2009

Replies: 6

Views: 3K

Is the Idea of the Big Bang as the Beginning of the Universe Outdated?

Sep 11, 2009 · Replies 13 · Sep 13, 2009

Replies: 13

Views: 3K

String theory and gravitational waves imprint on microwave background

Sep 12, 2009 · Replies 4 · Sep 13, 2009

Replies: 4

Views: 2K

How does cosmic microwave radiation lose energy?

Sep 10, 2009 · Replies 23 · Sep 13, 2009

Replies: 23

Views: 5K

A challenge to the symmetry of laws of physics

Sep 11, 2009 · Replies 1 · Sep 12, 2009

Replies: 1

Views: 2K

Poll

In currently understood physics, does the universe have a centre?

Aug 9, 2009 · Replies 22 · Sep 10, 2009

Replies: 22

Views: 5K

A little thought of before the Big Bang

Aug 16, 2009 · Replies 52 · Sep 10, 2009

2

Replies: 52

Views: 10K

Expansion around gravitational clusters

Sep 8, 2009 · Replies 2 · Sep 9, 2009

Replies: 2

Views: 2K

CMB fluctuations and large scale fluctuations nowadays do not match ?

Sep 6, 2009 · Replies 4 · Sep 8, 2009

Replies: 4

Views: 3K

Can Black Holes Be Used for Space Travel and How Do They Compare to Wormholes?

May 14, 2009 · Replies 6 · Sep 6, 2009

Replies: 6

Views: 5K

Mass of BH & Host Galaxy: A Deeper Look

Sep 3, 2009 · Replies 1 · Sep 3, 2009

Replies: 1

Views: 2K

About how far are we now from where we were one year ago?

Aug 11, 2009 · Replies 8 · Sep 2, 2009

Replies: 8

Views: 4K

Absolute velocity, CMB, and doppler shift

Aug 30, 2009 · Replies 15 · Sep 1, 2009

Replies: 15

Views: 8K

Life, the universe and everything

Aug 2, 2009 · Replies 43 · Aug 31, 2009

2

Replies: 43

Views: 7K

Speed of light effected by expansion of space?

Aug 27, 2009 · Replies 43 · Aug 30, 2009

2

Replies: 43

Views: 8K

Doppler effect and expanding universe

Apr 4, 2009 · Replies 9 · Aug 30, 2009

Replies: 9

Views: 6K

What is a cosmic red-out and how does it relate to the collision of galaxies?

Aug 26, 2009 · Replies 20 · Aug 29, 2009

Replies: 20

Views: 4K

Accelerated expansion without Dark Energy?

Aug 22, 2009 · Replies 12 · Aug 29, 2009

Replies: 12

Views: 4K

Is the 2006 edition of The Elegant Universe DVD worth the extra features?

Aug 21, 2009 · Replies 5 · Aug 28, 2009

Replies: 5

Views: 4K

Cosmic Darwinism - Definition & Overview

Aug 18, 2009 · Replies 8 · Aug 27, 2009

Replies: 8

Views: 4K

Hawking Radiation: Theory & Evidence Behind Black Hole Emission

Aug 21, 2009 · Replies 11 · Aug 27, 2009

Replies: 11

Views: 3K

The Production and Behavior of Dark Matter Neutrinos

Aug 26, 2009 · Replies 5 · Aug 27, 2009

Replies: 5

Views: 3K

Could Parallel Universes Really Collide?

Aug 24, 2009 · Replies 4 · Aug 27, 2009

Replies: 4

Views: 5K

Is there good evidence we live in Block Universe?

Aug 27, 2009 · Replies 1 · Aug 27, 2009

Replies: 1

Views: 4K

Is Dark Energy Really Constant? New Evidence from Multiple Surveys

Aug 25, 2009 · Replies 4 · Aug 26, 2009

Replies: 4

Views: 3K

What Lies Beyond the Edge of the Universe?

Jun 12, 2009 · Replies 15 · Aug 24, 2009

Replies: 15

Views: 4K

How do you create the big bang inside metamaterials?

Aug 23, 2009 · Replies 2 · Aug 24, 2009

Replies: 2

Views: 3K

Galaxy Recession: Explaining Hubble's Law

Aug 21, 2009 · Replies 2 · Aug 22, 2009

Replies: 2

Views: 3K

Choices in Multiverse: Do People Differ?

Aug 21, 2009 · Replies 1 · Aug 22, 2009

Replies: 1

Views: 2K

Does the conservation law prove that energy is eternal?

Aug 19, 2009 · Replies 25 · Aug 21, 2009

Replies: 25

Views: 14K

Before the Big Bang now a topic for wider audience

Aug 21, 2009 · Replies 0 · Aug 21, 2009

Replies: 0

Views: 2K

Understand Bubble Nucleation in Phase Transition - Analogy/Figuration

Aug 20, 2009 · Replies 1 · Aug 21, 2009

Replies: 1

Views: 3K

Is the Cyclic Model of the Universe a Viable Alternative to the Big Bang Theory?

Jun 3, 2009 · Replies 18 · Aug 20, 2009

Replies: 18

Views: 10K

Does Space Move? Answers to Your Questions

May 10, 2009 · Replies 6 · Aug 20, 2009

Replies: 6

Views: 11K

How Do You Calculate the Weight of a Black Hole?

Aug 19, 2009 · Replies 4 · Aug 20, 2009

Replies: 4

Views: 3K

The Curvature of Space: Understanding the Flatness of the Universe

Aug 13, 2009 · Replies 10 · Aug 20, 2009

Replies: 10

Views: 3K

Accelerating expansion of the universe.

Aug 18, 2009 · Replies 5 · Aug 19, 2009

Replies: 5

Views: 3K

Amplitude of velocity perturbations at last scattering

Aug 18, 2009 · Replies 1 · Aug 19, 2009

Replies: 1

Views: 2K

What Triggered the Big Bang According to 'The Universe' on History Channel?

Aug 18, 2009 · Replies 2 · Aug 18, 2009

Replies: 2

Views: 3K

Question about Expansion and the Center of the Universe

Aug 16, 2009 · Replies 11 · Aug 17, 2009

Replies: 11

Views: 4K

Cosmic Darwinism featured in new view of the universe

Aug 12, 2009 · Replies 37 · Aug 17, 2009

2

Replies: 37

Views: 6K

The Relationship Between Distance and Brightness in Cosmology

Aug 15, 2009 · Replies 26 · Aug 17, 2009

Replies: 26

Views: 5K

The singularity moment at the beginning of the universe

Aug 13, 2009 · Replies 36 · Aug 16, 2009

2

Replies: 36

Views: 7K

Model Universe: Calculating Gravitational Info Rate

Aug 15, 2009 · Replies 10 · Aug 16, 2009

Replies: 10

Views: 2K

CMB Flux Density: Deriving For Present Cosmology

Aug 13, 2009 · Replies 5 · Aug 14, 2009

Replies: 5

Views: 6K

Red Shift - From Dark Material Or Recession?

Mar 22, 2006 · Replies 5 · Aug 14, 2009

Replies: 5

Views: 3K

Why are the distant stars so far apart?

Aug 13, 2009 · Replies 9 · Aug 13, 2009

Replies: 9

Views: 8K

How does the expansion of the universe affect redshift?

Aug 12, 2009 · Replies 1 · Aug 13, 2009

Replies: 1

Views: 3K

What Could Cause a Big Crunch in the Expansion of the Universe?

Jul 27, 2009 · Replies 141 · Aug 12, 2009

5

Replies: 141

Views: 19K

Could Minor Density Variations in the Universe Solve the Flatness Problem?

Aug 10, 2009 · Replies 2 · Aug 11, 2009

Replies: 2

Views: 2K

Redshift of Far Galaxies: What Causes It?

Aug 10, 2009 · Replies 4 · Aug 11, 2009

Replies: 4

Views: 2K

Cosmology

Cosmology is the scientific study of the large-scale structure, origin, evolution, and ultimate fate of the universe. It seeks to understand the fundamental nature of the cosmos, including the distribution of galaxies, dark matter, dark energy, and the overall geometry of space-time. Cosmologists explore the early moments of the universe, moments after the Big Bang, and employ various observational tools, such as telescopes and satellites, to gather data that informs our understanding of cosmic evolution.

Key concepts in cosmology include the expansion of the universe, cosmic microwave background radiation, and the formation of galaxies and large-scale structures. It is a field that intersects with physics, astronomy, and astrophysics, providing insights into the vast and intricate tapestry of the cosmos.

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