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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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Edge of Universe: What's Beyond the Limit?

Dec 13, 2009 · Replies 27 · Dec 27, 2009

Replies: 27

Views: 6K

Evidence for pre Big Bang physical universe?

Dec 22, 2009 · Replies 31 · Dec 27, 2009

2

Replies: 31

Views: 8K

The metric expansion of the Universe

Dec 24, 2009 · Replies 1 · Dec 25, 2009

Replies: 1

Views: 3K

What is the true essence of the universe beyond human perception?

Dec 24, 2009 · Replies 3 · Dec 24, 2009

Replies: 3

Views: 2K

Why is the term 'Big Bang' a misnomer?

Dec 24, 2009 · Replies 4 · Dec 24, 2009

Replies: 4

Views: 5K

Was there more than one Big Bang?

Dec 20, 2009 · Replies 9 · Dec 22, 2009

Replies: 9

Views: 3K

How Does the Integrated Sachs-Wolfe Effect Support the Concept of Dark Energy?

Dec 19, 2009 · Replies 4 · Dec 21, 2009

Replies: 4

Views: 3K

What Would an Infinite Universe Look Like at the Time of the Big Bang?

Dec 16, 2009 · Replies 6 · Dec 21, 2009

Replies: 6

Views: 5K

Are Black Holes Real? Investigating Gravitational Collapse

Dec 11, 2009 · Replies 44 · Dec 21, 2009

2

Replies: 44

Views: 7K

Pauli Exclusion Principle: Finite Creativity or Philosophy?

Dec 20, 2009 · Replies 1 · Dec 20, 2009

Replies: 1

Views: 3K

Is this not mathematical evidence that the universe is an open system?

Dec 20, 2009 · Replies 1 · Dec 20, 2009

Replies: 1

Views: 3K

Black holes, white holes and expansion of Universe

Dec 17, 2009 · Replies 7 · Dec 18, 2009

Replies: 7

Views: 10K

The Illusion of the 3rd Dimension: A Mathematical Perspective on Space and Time

Dec 16, 2009 · Replies 7 · Dec 18, 2009

Replies: 7

Views: 3K

Proximity of early galaxies to each other

Dec 17, 2009 · Replies 2 · Dec 18, 2009

Replies: 2

Views: 2K

Does the expansion rate of our universe depend on its mean density?

Dec 15, 2009 · Replies 17 · Dec 17, 2009

Replies: 17

Views: 3K

Horizon problem - why do we need inflation?

Dec 13, 2009 · Replies 41 · Dec 17, 2009

2

Replies: 41

Views: 8K

Why Is Dark Matter Essential for Understanding Gravity in the Universe?

Dec 3, 2009 · Replies 31 · Dec 16, 2009

2

Replies: 31

Views: 5K

What is our universe expanding into?

Aug 1, 2007 · Replies 37 · Dec 15, 2009

2

Replies: 37

Views: 27K

Can Modified Gravity Explain Cosmic Structure Without Dark Matter?

Dec 14, 2006 · Replies 11 · Dec 15, 2009

Replies: 11

Views: 7K

Correcting Galaxy Luminosities for Absorption ?

Dec 9, 2009 · Replies 2 · Dec 14, 2009

Replies: 2

Views: 2K

Is Modified Gravity Theory a Viable Alternative to Dark Matter?

Oct 29, 2007 · Replies 36 · Dec 14, 2009

2

Replies: 36

Views: 12K

How do we know that spacetime is expanding

Dec 13, 2009 · Replies 2 · Dec 14, 2009

Replies: 2

Views: 3K

Is the Higgs Particle Just a Myth?

Dec 13, 2009 · Replies 3 · Dec 13, 2009

Replies: 3

Views: 3K

Future of the universe without proton decay.

Nov 26, 2009 · Replies 2 · Dec 13, 2009

Replies: 2

Views: 3K

Can Modifications to Gravity Explain the Accelerating Expansion of the Universe?

Dec 11, 2009 · Replies 9 · Dec 13, 2009

Replies: 9

Views: 5K

What Lies Beyond the Universe?

Dec 11, 2009 · Replies 4 · Dec 11, 2009

Replies: 4

Views: 2K

Ted Bunn on expansion, redshifts and the dangers of 'rubber sheets'

Dec 9, 2009 · Replies 7 · Dec 11, 2009

Replies: 7

Views: 3K

What is the relationship between stars, lithium, and exoplanets?

Dec 10, 2009 · Replies 3 · Dec 10, 2009

Replies: 3

Views: 2K

Redshift and Particle Momentum Decay

Dec 6, 2009 · Replies 10 · Dec 10, 2009

Replies: 10

Views: 5K

Is the Steinhardt-Turok Cyclic Model Gaining Support?

Dec 4, 2009 · Replies 3 · Dec 9, 2009

Replies: 3

Views: 4K

Accelerating Expansion Threshhold

Jan 6, 2009 · Replies 37 · Dec 9, 2009

2

Replies: 37

Views: 7K

Is the universe an open or a closed system?

Sep 13, 2008 · Replies 8 · Dec 9, 2009

Replies: 8

Views: 47K

Stars born in clusters, found in single

Dec 5, 2009 · Replies 10 · Dec 9, 2009

Replies: 10

Views: 3K

Evidence of Expansion: Redshifting of EM Radiation

Dec 2, 2009 · Replies 3 · Dec 7, 2009

Replies: 3

Views: 3K

Antimatter (in relation to earth)

Dec 6, 2009 · Replies 2 · Dec 7, 2009

Replies: 2

Views: 2K

Supergalactic cluster waves and geological cycles

Nov 29, 2009 · Replies 44 · Dec 6, 2009

2

Replies: 44

Views: 7K

Does recent expansion change the predicted CMB temperature?

Nov 28, 2009 · Replies 14 · Dec 6, 2009

Replies: 14

Views: 3K

Hey guys, this is my theory of blackholes and how new parallel universes

Dec 5, 2009 · Replies 3 · Dec 5, 2009

Replies: 3

Views: 2K

Are Distant Galaxies Composed of Matter or Anti-Matter?

Nov 18, 2009 · Replies 12 · Dec 4, 2009

Replies: 12

Views: 4K

How do we deal with theories that are hard to prove or falsify?

Nov 23, 2009 · Replies 10 · Dec 2, 2009

Replies: 10

Views: 3K

Challenges in Understanding Dark Energy and Dark Matter: A Scientific Inquiry

Nov 17, 2009 · Replies 34 · Dec 1, 2009

2

Replies: 34

Views: 6K

If you were to create a universe

Nov 29, 2009 · Replies 12 · Dec 1, 2009

Replies: 12

Views: 3K

Evidence for Expansion Velocity change

Nov 24, 2009 · Replies 19 · Nov 30, 2009

Replies: 19

Views: 3K

CMB SLS one instant or over a period of time

Nov 28, 2009 · Replies 4 · Nov 29, 2009

Replies: 4

Views: 3K

Angular Momentum and the Big Bang

Nov 26, 2009 · Replies 9 · Nov 29, 2009

Replies: 9

Views: 19K

What is the composition of the universe according to WMAP?

Nov 27, 2009 · Replies 2 · Nov 28, 2009

Replies: 2

Views: 2K

Milky Way excess Microwave Radiation

Nov 27, 2009 · Replies 1 · Nov 27, 2009

Replies: 1

Views: 2K

Understanding the Expanding Universe: The Role of Energy and Acceleration

Nov 15, 2009 · Replies 6 · Nov 27, 2009

Replies: 6

Views: 3K

How Do Earth's Uneven Gravity Fields Affect Spacecraft Flybys?

Nov 26, 2009 · Replies 2 · Nov 27, 2009

Replies: 2

Views: 2K

Reverse Universe: Investigating Deductive Conclusions from Reversible Laws

Nov 25, 2009 · Replies 2 · Nov 26, 2009

Replies: 2

Views: 3K

Is There Any Difference Between A Stretching or Expanding Universe?

Nov 23, 2009 · Replies 19 · Nov 25, 2009

Replies: 19

Views: 6K

Can a Black Hole's Event Horizon Ever Collapse in on Itself?

Nov 21, 2009 · Replies 8 · Nov 25, 2009

Replies: 8

Views: 3K

Does Time Slow Down in a Black Hole?

Nov 24, 2009 · Replies 3 · Nov 25, 2009

Replies: 3

Views: 2K

Find out how much the universe grew by during the period of inflation

Nov 24, 2009 · Replies 2 · Nov 25, 2009

Replies: 2

Views: 2K

Gravities effect on the boundaries of the Universe

Nov 20, 2009 · Replies 28 · Nov 24, 2009

Replies: 28

Views: 5K

Question about light getting sucked into a black hole

Nov 23, 2009 · Replies 14 · Nov 24, 2009

Replies: 14

Views: 4K

Question about gravity and density

Nov 23, 2009 · Replies 3 · Nov 24, 2009

Replies: 3

Views: 2K

Could Particles be just distortions in Space?

Nov 21, 2009 · Replies 24 · Nov 24, 2009

Replies: 24

Views: 4K

Expanding universe or shrinking space(-time)

Nov 13, 2009 · Replies 28 · Nov 22, 2009

Replies: 28

Views: 19K

Could the Big Bang Be a Collision of Parallel Universes?

Oct 14, 2009 · Replies 22 · Nov 21, 2009

Replies: 22

Views: 5K

Does Gravity Act Faster Than the Speed of Light?

Oct 29, 2009 · Replies 15 · Nov 21, 2009

Replies: 15

Views: 4K

Help me to find the article, please

Nov 19, 2009 · Replies 3 · Nov 20, 2009

Replies: 3

Views: 2K

Is this even scientifically possible?

Nov 14, 2009 · Replies 6 · Nov 19, 2009

Replies: 6

Views: 3K

Present distance to surface of transluminal expansion

Nov 16, 2009 · Replies 8 · Nov 19, 2009

Replies: 8

Views: 3K

Do voids in the Universe influence the orientation of galaxies?

Nov 3, 2009 · Replies 62 · Nov 17, 2009

3

Replies: 62

Views: 9K

Reverse Universe: Acceleration and Time Reversibility

Nov 16, 2009 · Replies 2 · Nov 17, 2009

Replies: 2

Views: 2K

Cosmology inequality that I'm struggling to make sense of

Nov 14, 2009 · Replies 3 · Nov 17, 2009

Replies: 3

Views: 2K

Redshift, Quantum Theory, and the Standard Model

Nov 16, 2009 · Replies 3 · Nov 17, 2009

Replies: 3

Views: 4K

Unraveling the Mystery of the Expanding Universe

Nov 15, 2009 · Replies 31 · Nov 16, 2009

2

Replies: 31

Views: 2K

Cosmology Raw Data: Access Unanalyzed Experiments

Nov 14, 2009 · Replies 9 · Nov 16, 2009

Replies: 9

Views: 3K

Uncovering the Mystery of the Universe's Blinding White Light

Nov 15, 2009 · Replies 4 · Nov 15, 2009

Replies: 4

Views: 2K

Regardless of an expanding universe

Nov 13, 2009 · Replies 5 · Nov 14, 2009

Replies: 5

Views: 3K

Answering Dumb Questions about Universe Expansion and Gravity

Nov 9, 2009 · Replies 24 · Nov 13, 2009

Replies: 24

Views: 4K

Is hydrogen the key to the universe's survival?

Nov 11, 2009 · Replies 9 · Nov 12, 2009

Replies: 9

Views: 4K

How Do Observers Measure the Universe's Age and Size in Cosmology?

Nov 12, 2009 · Replies 2 · Nov 12, 2009

Replies: 2

Views: 2K

Is the Universe Analog or Digital?

Jan 7, 2004 · Replies 5 · Nov 12, 2009

Replies: 5

Views: 17K

Is the CMB dipole influenced by the recession velocity of the CMB?

Jan 26, 2006 · Replies 9 · Nov 11, 2009

Replies: 9

Views: 7K

What are the effects of falling matter on a black hole and its event horizon?

Nov 10, 2009 · Replies 4 · Nov 11, 2009

Replies: 4

Views: 3K

Could the Big Bang Be the Middle of the Universe?

Nov 6, 2009 · Replies 52 · Nov 9, 2009

2

Replies: 52

Views: 9K

Mass-dominated vs. radiation-dominated.

Nov 9, 2009 · Replies 5 · Nov 9, 2009

Replies: 5

Views: 4K

How to measure the CDM power spectrum?

Nov 6, 2009 · Replies 6 · Nov 9, 2009

Replies: 6

Views: 4K

Is the Universe the Size of a Grapefruit?

Oct 30, 2009 · Replies 38 · Nov 8, 2009

2

Replies: 38

Views: 10K

Unraveling the Mystery of the Universe's Age: The Big Bang Theory Explained

Nov 7, 2009 · Replies 2 · Nov 8, 2009

Replies: 2

Views: 2K

Poll

What is most influential candidate quantum cosmology today?

Nov 7, 2009 · Replies 1 · Nov 7, 2009

Replies: 1

Views: 2K

How Big is the Universe and How Did it Begin?

Nov 7, 2009 · Replies 1 · Nov 7, 2009

Replies: 1

Views: 2K

Last Digit of Pi in the measurable universe

Oct 29, 2009 · Replies 9 · Nov 6, 2009

Replies: 9

Views: 7K

Inflation theory; dead or alive?

Nov 1, 2009 · Replies 13 · Nov 6, 2009

Replies: 13

Views: 3K

What is Plasma Cosmology and its impact on current scientific understanding?

Nov 3, 2009 · Replies 5 · Nov 4, 2009

Replies: 5

Views: 2K

Black hole in one universe to generate a big bang

Oct 30, 2009 · Replies 7 · Nov 3, 2009

Replies: 7

Views: 3K

The Small Particle That Started The Big Bang

Oct 26, 2009 · Replies 45 · Nov 2, 2009

2

Replies: 45

Views: 8K

Collisions between galaxies, geometry of expansion.

Nov 1, 2009 · Replies 2 · Nov 2, 2009

Replies: 2

Views: 2K

Why is 10^-36 seconds considered the starting point of inflation?

Oct 30, 2009 · Replies 3 · Oct 31, 2009

Replies: 3

Views: 3K

Recommend some papers or books on Inflation

Oct 30, 2009 · Replies 5 · Oct 30, 2009

Replies: 5

Views: 2K

Does the expansion of the universe also cause an increase in overall entropy?

Jun 14, 2009 · Replies 39 · Oct 29, 2009

2

Replies: 39

Views: 9K

Is the Universe Expanding Slower Now Than in the Past?

Oct 28, 2009 · Replies 9 · Oct 29, 2009

Replies: 9

Views: 4K

Dark matter and supermassive black holes

Oct 23, 2009 · Replies 7 · Oct 28, 2009

Replies: 7

Views: 3K

Cmb 13.7 billion light years away

Oct 25, 2009 · Replies 17 · Oct 28, 2009

Replies: 17

Views: 4K

What is the more puzzling our universe with inflation or without it?

Oct 20, 2009 · Replies 22 · Oct 28, 2009

Replies: 22

Views: 4K

More evidence for dark matter-another cluster collision

Jul 16, 2008 · Replies 21 · Oct 26, 2009

Replies: 21

Views: 6K

Energy density of massive neutrinos

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

Replies: 3

Views: 3K

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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