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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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Is vacuum acceleration directly proportional to distance?

Aug 17, 2015 · Replies 4 · Aug 18, 2015

Replies: 4

Views: 2K

B How is the Big Bang compatible with an infinite universe?

Aug 11, 2015 · Replies 53 · Aug 17, 2015

2

Replies: 53

Views: 8K

A Is This Equation Accurate for Determining the Size of the Universe?

Aug 16, 2015 · Replies 6 · Aug 16, 2015

Replies: 6

Views: 1K

What is the edge of the universe and what lies beyond?

Aug 14, 2015 · Replies 4 · Aug 14, 2015

Replies: 4

Views: 2K

B Questions regarding to the Accelerating universe from Novice

Aug 11, 2015 · Replies 9 · Aug 14, 2015

Replies: 9

Views: 2K

Explore the Too-Big-to-Fail Problem: A Comprehensive Assessment

Aug 13, 2015 · Replies 8 · Aug 14, 2015

Replies: 8

Views: 2K

Primordial gravitational wave constraints from Planck 2015

Aug 12, 2015 · Replies 4 · Aug 13, 2015

Replies: 4

Views: 2K

Is the Universe Flatter Than We Thought?

Aug 12, 2015 · Replies 2 · Aug 13, 2015

Replies: 2

Views: 1K

Physical cosmology learning sites

Aug 13, 2015 · Replies 4 · Aug 13, 2015

Replies: 4

Views: 1K

Why Can't We See Beyond the Cosmic Horizon Despite Observing the Oldest Light?

Aug 13, 2015 · Replies 6 · Aug 13, 2015

Replies: 6

Views: 2K

Insights Approximate LCDM Expansion in Simplified Math (Part 4) - Comments

Aug 5, 2015 · Replies 14 · Aug 12, 2015

Replies: 14

Views: 2K

What Determines the Fate of Our Universe?

Aug 9, 2015 · Replies 9 · Aug 12, 2015

Replies: 9

Views: 2K

Dark Matter Primer: Overview and Updates

Aug 12, 2015 · Replies 1 · Aug 12, 2015

Replies: 1

Views: 1K

Dark Matter density given specific location

Aug 10, 2015 · Replies 27 · Aug 12, 2015

Replies: 27

Views: 2K

Dark matter and Antimatter-matter

Aug 11, 2015 · Replies 12 · Aug 11, 2015

Replies: 12

Views: 2K

Is dark matter distrubition always near galaxies?

Aug 11, 2015 · Replies 5 · Aug 11, 2015

Replies: 5

Views: 1K

Dark energy and cosmological constant

Aug 11, 2015 · Replies 11 · Aug 11, 2015

Replies: 11

Views: 2K

What is math showing inflation solves horizon problem?

Aug 10, 2015 · Replies 6 · Aug 11, 2015

Replies: 6

Views: 3K

Is R_h=ct a more accurate cosmological model than wCDM/LCDM?

Jul 31, 2015 · Replies 7 · Aug 11, 2015

Replies: 7

Views: 2K

Derivation of Gott's formula for size of observable universe

Aug 10, 2015 · Replies 4 · Aug 10, 2015

Replies: 4

Views: 2K

Huge news about a huge structure

Aug 6, 2015 · Replies 11 · Aug 10, 2015

Replies: 11

Views: 2K

Possible Way to Measure Dark Energy?

Aug 9, 2015 · Replies 5 · Aug 10, 2015

Replies: 5

Views: 2K

Does Black Hole Information Storage Suggest a Holographic Universe?

Nov 16, 2011 · Replies 6 · Aug 9, 2015

Replies: 6

Views: 3K

How we are still able to detect CMB photons?

Aug 9, 2015 · Replies 4 · Aug 9, 2015

Replies: 4

Views: 1K

Is the Total Energy of the Universe Really Zero?

Aug 5, 2015 · Replies 16 · Aug 8, 2015

Replies: 16

Views: 3K

Why is the Universe (nearly) flat?

Mar 21, 2015 · Replies 48 · Aug 8, 2015

2

Replies: 48

Views: 6K

Is there a size or duration limit on fields having mass?

Aug 1, 2015 · Replies 14 · Aug 7, 2015

Replies: 14

Views: 2K

B Big Bang & Infinite Universe: Evidence & Discrepancies

Jul 29, 2015 · Replies 49 · Aug 6, 2015

2

Replies: 49

Views: 6K

Is Galilean Creation a Viable Alternative to Inflationary Cosmology?

Apr 23, 2015 · Replies 9 · Aug 6, 2015

Replies: 9

Views: 2K

Age of the observable Universe?

Aug 1, 2015 · Replies 18 · Aug 5, 2015

Replies: 18

Views: 2K

Universal Gravity: Does It Affect Us Beyond the CEH Line?

Aug 5, 2015 · Replies 3 · Aug 5, 2015

Replies: 3

Views: 1K

Is the Universe's Expansion Truly Accelerating Based on Redshift Observations?

Aug 4, 2015 · Replies 8 · Aug 5, 2015

Replies: 8

Views: 2K

Understanding Coherent Large Scale Modes in Power Spectra

Jul 29, 2015 · Replies 4 · Aug 5, 2015

Replies: 4

Views: 1K

Will the Universe Collapse Soon?

Aug 5, 2015 · Replies 1 · Aug 5, 2015

Replies: 1

Views: 1K

Closed Universe: Can Universe Be Considered a System?

Aug 1, 2015 · Replies 6 · Aug 4, 2015

Replies: 6

Views: 3K

Quantum tunnel into becoming solid iron

Aug 2, 2015 · Replies 10 · Aug 4, 2015

Replies: 10

Views: 4K

How can the observable universe be 46 billion lyrs in size?

Jul 26, 2015 · Replies 38 · Aug 3, 2015

2

Replies: 38

Views: 5K

The End of the Universe: Heat Death and the Fate of Matter

Aug 1, 2015 · Replies 15 · Aug 2, 2015

Replies: 15

Views: 3K

Inflation and Monopoles: Exploring the Mysteries of Cosmic Expansion

Jun 29, 2015 · Replies 43 · Aug 2, 2015

2

Replies: 43

Views: 6K

Can LQC be distinguished from normal inflation through observational windows?

Jul 29, 2015 · Replies 11 · Aug 2, 2015

Replies: 11

Views: 3K

Predicted Heat Death of the Universe

Jul 24, 2015 · Replies 18 · Aug 1, 2015

Replies: 18

Views: 5K

Phase Space & SM: Universe Defined?

Jul 30, 2015 · Replies 9 · Aug 1, 2015

Replies: 9

Views: 1K

Black Holes: Gravity & Formation Explained

Jul 30, 2015 · Replies 5 · Jul 31, 2015

Replies: 5

Views: 2K

What Are the Implications of Unfalsifiable Theories Beyond the Big Bang?

Jul 30, 2015 · Replies 10 · Jul 30, 2015

Replies: 10

Views: 2K

Did Time Exist Before the Big Bang?

Jul 16, 2015 · Replies 26 · Jul 30, 2015

Replies: 26

Views: 4K

Dark matter particle search at CERN vs cosmology simulations

Jul 29, 2015 · Replies 9 · Jul 29, 2015

Replies: 9

Views: 2K

Newtonian Friedmann Equation, Referance frame, Homogeneity

Jul 13, 2015 · Replies 28 · Jul 29, 2015

Replies: 28

Views: 4K

Why Photons Can't Explain Dark Matter

Jul 22, 2015 · Replies 8 · Jul 28, 2015

Replies: 8

Views: 3K

How do we know the universe is infinite?

Jul 26, 2015 · Replies 39 · Jul 28, 2015

2

Replies: 39

Views: 6K

What actually happens when the black hole takes the photons

Jul 28, 2015 · Replies 2 · Jul 28, 2015

Replies: 2

Views: 1K

Insights LCDM Cosmological Model in Simplified Math (Part 3) - Comments

Jul 27, 2015 · Replies 5 · Jul 27, 2015

Replies: 5

Views: 1K

Insights Approximate LCDM Expansion in Simplified Math (Part 2) - Comments

Jul 24, 2015 · Replies 14 · Jul 27, 2015

Replies: 14

Views: 3K

Expansion is a compounded error based on a wrong assumption?

Jul 26, 2015 · Replies 3 · Jul 26, 2015

Replies: 3

Views: 2K

Variable Speed Of Light In General Relativity

Jul 24, 2015 · Replies 6 · Jul 25, 2015

Replies: 6

Views: 4K

New Theory: Dark Matter Acts Like Pion - Evidence Found

Jul 23, 2015 · Replies 5 · Jul 24, 2015

Replies: 5

Views: 2K

How do they know distance of the original standard candle?

Jul 23, 2015 · Replies 3 · Jul 24, 2015

Replies: 3

Views: 2K

Critical density: question correction

Jul 23, 2015 · Replies 9 · Jul 23, 2015

Replies: 9

Views: 3K

From Aeon to Zeon to Zeit, simplifying the standard cosmic model

May 1, 2015 · Replies 277 · Jul 23, 2015

10

Replies: 277

Views: 22K

Does theory of expansion effect gravity?

Jul 22, 2015 · Replies 8 · Jul 23, 2015

Replies: 8

Views: 1K

Utility of observational Hubble parameter data on DE

Jul 12, 2015 · Replies 26 · Jul 22, 2015

Replies: 26

Views: 4K

Cumulative number counts of galaxy clusters

Jul 14, 2015 · Replies 2 · Jul 22, 2015

Replies: 2

Views: 1K

Why do we believe dark matter exists?

Jul 19, 2015 · Replies 32 · Jul 22, 2015

2

Replies: 32

Views: 4K

What's the Dark Matter Density in Universe?

Jul 20, 2015 · Replies 13 · Jul 20, 2015

Replies: 13

Views: 2K

Does space expansion affect the rate of time?

Jul 11, 2015 · Replies 18 · Jul 20, 2015

Replies: 18

Views: 4K

Non-Flat ΛCDM Model: Consistency with BOSS Result on Universe Curvature

Jul 18, 2015 · Replies 2 · Jul 20, 2015

Replies: 2

Views: 2K

Insights Approximate LCDM Expansion in Simplified Math - Comments

Jul 19, 2015 · Replies 11 · Jul 20, 2015

Replies: 11

Views: 2K

Newbie question.... The Big Bang & The Observable Universe (and time)

Jul 8, 2015 · Replies 15 · Jul 18, 2015

Replies: 15

Views: 10K

Similarities and differences Black Holes and Big Bang

Jul 18, 2015 · Replies 1 · Jul 18, 2015

Replies: 1

Views: 4K

Is Dark matter homogeneous in Universe?

Jul 16, 2015 · Replies 19 · Jul 17, 2015

Replies: 19

Views: 3K

Has the Cosmological Constant Mystery Been Solved?

Jul 15, 2015 · Replies 21 · Jul 16, 2015

Replies: 21

Views: 3K

Big Bang Expansion Creates Planets?

Jul 16, 2015 · Replies 3 · Jul 16, 2015

Replies: 3

Views: 1K

Proportions and other Stuff about Expansion

Jul 15, 2015 · Replies 5 · Jul 15, 2015

Replies: 5

Views: 2K

So my question would be: Is Dark Matter a superfluid?

Jul 14, 2015 · Replies 8 · Jul 15, 2015

Replies: 8

Views: 3K

Why isnt the universe full of quark stars?

Jul 12, 2015 · Replies 11 · Jul 13, 2015

Replies: 11

Views: 2K

How Do We Determine the Original Color of Light from Distant Galaxies?

Jul 4, 2015 · Replies 15 · Jul 12, 2015

Replies: 15

Views: 3K

Does the Sun Spin? Answers Explained

Jul 12, 2015 · Replies 3 · Jul 12, 2015

Replies: 3

Views: 1K

FRW metric, convention misunderstanding?

Jul 12, 2015 · Replies 1 · Jul 12, 2015

Replies: 1

Views: 2K

Why do we believe gravity to be a weak force....?

Jul 5, 2015 · Replies 15 · Jul 12, 2015

Replies: 15

Views: 5K

The LCDM Cosmological Model in Simplified Math

Jul 6, 2015 · Replies 7 · Jul 12, 2015

Replies: 7

Views: 3K

Question about speed of light and information

Jul 6, 2015 · Replies 60 · Jul 12, 2015

3

Replies: 60

Views: 5K

Can the mathematical equations in cosmology truly describe the real world?

Jul 5, 2015 · Replies 27 · Jul 11, 2015

Replies: 27

Views: 4K

A layman's guide to the accelerating expansion of space

Jun 19, 2015 · Replies 53 · Jul 11, 2015

2

Replies: 53

Views: 6K

Coordinate conditions in cosmology

Jul 10, 2015 · Replies 4 · Jul 10, 2015

Replies: 4

Views: 1K

Simple explanation of the Boltzmann Brain paradox

Jul 8, 2015 · Replies 1 · Jul 9, 2015

Replies: 1

Views: 3K

Why must dark matter interact weakly?

Jul 7, 2015 · Replies 9 · Jul 7, 2015

Replies: 9

Views: 3K

Something about calculating the Age of the Universe

Apr 7, 2015 · Replies 132 · Jul 7, 2015

5

Replies: 132

Views: 13K

Hubble's Law and Hubble's Constant

Jul 4, 2015 · Replies 4 · Jul 6, 2015

Replies: 4

Views: 3K

Do geodesics of measure zero allow past-eternal inflation?

Jul 5, 2015 · Replies 5 · Jul 6, 2015

Replies: 5

Views: 2K

How do we know black holes exist beyond the theory of relativity?

Jun 22, 2015 · Replies 23 · Jul 4, 2015

Replies: 23

Views: 3K

New approach to cosmological bulk viscosity

Jul 3, 2015 · Replies 2 · Jul 4, 2015

Replies: 2

Views: 1K

What Other Theories Exist for Modifying Gravity Besides Mond?

Jun 26, 2015 · Replies 5 · Jul 4, 2015

Replies: 5

Views: 2K

Dark matter, Mach's ether and the QCD vacuum

Jul 3, 2015 · Replies 1 · Jul 4, 2015

Replies: 1

Views: 2K

Thermodynamics at the apparent horizon of the universe

Jul 2, 2015 · Replies 8 · Jul 3, 2015

Replies: 8

Views: 2K

CMB at 50: Princeton early universe panel discussion

Jul 3, 2015 · Replies 2 · Jul 3, 2015

Replies: 2

Views: 2K

Kinetic equilibrum and chemical equilibrium

Jul 2, 2015 · Replies 4 · Jul 2, 2015

Replies: 4

Views: 2K

Any solid theories re: where it all came from?

Jun 30, 2015 · Replies 10 · Jul 2, 2015

Replies: 10

Views: 2K

Isn't space expansion logically required?

Jun 25, 2015 · Replies 74 · Jul 1, 2015

3

Replies: 74

Views: 5K

Size of the visible/observable universe

Jun 24, 2015 · Replies 8 · Jun 30, 2015

Replies: 8

Views: 2K

What Does Lambda Represent in Cosmology's Expanding Universe Model?

Jun 28, 2015 · Replies 10 · Jun 29, 2015

Replies: 10

Views: 1K

Are Universal Oscillations Causing Changes in Cosmological Expansion?

Jun 26, 2015 · Replies 8 · Jun 27, 2015

Replies: 8

Views: 1K

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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