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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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How Can We See the Universe's Past if We Are Made from It?

Oct 27, 2007 · Replies 10 · Nov 3, 2007

Replies: 10

Views: 3K

Does the Confusing Supernova Challenge the Big Bang Theory?

Nov 3, 2007 · Replies 4 · Nov 3, 2007

Replies: 4

Views: 3K

Is the Big Bang Theory a Foolhardy Extrapolation?

Oct 31, 2007 · Replies 58 · Nov 3, 2007

2

Replies: 58

Views: 11K

Big Bang and the Second Law of Thermodynamics

Nov 2, 2007 · Replies 3 · Nov 2, 2007

Replies: 3

Views: 6K

Can Future Civilizations Harness Entropy to Survive in an Expanding Universe?

Nov 2, 2007 · Replies 3 · Nov 2, 2007

Replies: 3

Views: 4K

What is the ultimate fate of the universe?

Nov 2, 2007 · Replies 2 · Nov 2, 2007

Replies: 2

Views: 3K

Friedmann Cosmology at T < 1 second

Oct 31, 2007 · Replies 10 · Nov 1, 2007

Replies: 10

Views: 4K

What Does Expanding Universe Mean?

Oct 14, 2007 · Replies 7 · Nov 1, 2007

Replies: 7

Views: 3K

Universe expansion -> t = - inifinite

Oct 30, 2007 · Replies 5 · Oct 31, 2007

Replies: 5

Views: 2K

Another hawking radiation question

Oct 31, 2007 · Replies 1 · Oct 31, 2007

Replies: 1

Views: 3K

Gravity & Big Bang: Can Matter Escape Its Own Pull?

Oct 28, 2007 · Replies 3 · Oct 30, 2007

Replies: 3

Views: 3K

Can a Photon's Energy Approach Zero?

Oct 29, 2007 · Replies 4 · Oct 30, 2007

Replies: 4

Views: 6K

Friiedman Fun Facts to know and tell

Oct 20, 2007 · Replies 54 · Oct 29, 2007

2

Replies: 54

Views: 10K

What are the unexpected aspects of cosmology?

Sep 20, 2007 · Replies 2 · Oct 29, 2007

Replies: 2

Views: 3K

Are Wormholes at the End of Black Holes a Possible Theory?

Oct 26, 2007 · Replies 3 · Oct 28, 2007

Replies: 3

Views: 5K

How Far Can We See the Brightest Known Star?

Oct 24, 2007 · Replies 2 · Oct 25, 2007

Replies: 2

Views: 5K

How Will the Universe Ultimately Meet Its End?

Jul 29, 2006 · Replies 10 · Oct 23, 2007

Replies: 10

Views: 3K

Matter combined with Antimater question

Apr 28, 2006 · Replies 9 · Oct 23, 2007

Replies: 9

Views: 6K

Is the Friedmann equation derived ONLY from the Einstein Field Equations?

Oct 21, 2007 · Replies 7 · Oct 22, 2007

Replies: 7

Views: 3K

Can Two Infinitely Sized Objects Exist in an Infinite Space?

Sep 20, 2007 · Replies 28 · Oct 21, 2007

Replies: 28

Views: 7K

Do black holes interact with dark matter/energy?

Mar 6, 2007 · Replies 12 · Oct 21, 2007

Replies: 12

Views: 6K

Expanding and Accelerating Space in Layman's Terms

Oct 18, 2007 · Replies 7 · Oct 20, 2007

Replies: 7

Views: 4K

Do new bits cause the expansion and acceleration of the Universe?

Oct 18, 2007 · Replies 2 · Oct 19, 2007

Replies: 2

Views: 3K

Are new planets and stars still forming?

Feb 5, 2007 · Replies 8 · Oct 19, 2007

Replies: 8

Views: 8K

What accounts for the expansion of the Universe accelerating?

Oct 15, 2007 · Replies 8 · Oct 18, 2007

Replies: 8

Views: 5K

What would the largest anti-matter object be?

Jun 5, 2007 · Replies 7 · Oct 18, 2007

Replies: 7

Views: 4K

Size Universe: Radius 13.7B Years Old?

Oct 14, 2007 · Replies 9 · Oct 17, 2007

Replies: 9

Views: 4K

Is the Friedmann expansion the ultimate 'free lunch'?

Oct 14, 2007 · Replies 10 · Oct 17, 2007

Replies: 10

Views: 4K

What are some other theories about dark matter and dark energy?

Oct 7, 2007 · Replies 11 · Oct 16, 2007

Replies: 11

Views: 5K

Dark Matter & Dark Energy: Unfound Cosmological Science

Oct 13, 2007 · Replies 1 · Oct 13, 2007

Replies: 1

Views: 3K

Debunking Video: Uncovering the Truth

Oct 13, 2007 · Replies 3 · Oct 13, 2007

Replies: 3

Views: 3K

Why our time dimension is about to become space-like

Oct 10, 2007 · Replies 6 · Oct 12, 2007

Replies: 6

Views: 4K

Is it helpful in formulating theories to assume the opposite of what we see?

Oct 2, 2007 · Replies 13 · Oct 12, 2007

Replies: 13

Views: 3K

Electricity and Birkeland currents in space

Sep 22, 2007 · Replies 18 · Oct 12, 2007

Replies: 18

Views: 10K

Can Energy Density in Deep Space Vacuums Be Measured?

Oct 11, 2007 · Replies 2 · Oct 12, 2007

Replies: 2

Views: 3K

Is a Larger Dimension Required for the Universe's Expansion?

Sep 18, 2007 · Replies 15 · Oct 8, 2007

Replies: 15

Views: 5K

Interpretation of dark energy and gravity as the same thing

Oct 8, 2007 · Replies 5 · Oct 8, 2007

Replies: 5

Views: 3K

What is the evidence and history behind the Big Bang Theory?

Oct 5, 2007 · Replies 3 · Oct 8, 2007

Replies: 3

Views: 3K

Calculating Dark Matter's Acoustic Peak Resonance: A Homework Assignment

Sep 29, 2007 · Replies 6 · Oct 7, 2007

Replies: 6

Views: 4K

Believing in an Infinite Universe: Reasons Explored

Oct 2, 2007 · Replies 16 · Oct 6, 2007

Replies: 16

Views: 6K

Law of conservation of Energy please explain how it is

Sep 26, 2007 · Replies 21 · Oct 4, 2007

Replies: 21

Views: 19K

Can Dark Energy Be Tested in a Lab Using Superconductors?

Oct 3, 2007 · Replies 3 · Oct 4, 2007

Replies: 3

Views: 3K

Parallel universes make quantum sense?

Sep 25, 2007 · Replies 39 · Oct 3, 2007

2

Replies: 39

Views: 9K

Questions About the Flat Universe: Answers Inside

Sep 30, 2007 · Replies 9 · Oct 2, 2007

Replies: 9

Views: 6K

Explaining Universe's Fate with Thermodynamics

Sep 24, 2007 · Replies 7 · Oct 2, 2007

Replies: 7

Views: 5K

Is the Big Bang Actually a White Hole?

Sep 29, 2007 · Replies 3 · Oct 1, 2007

Replies: 3

Views: 3K

Uniqueness of Bojowald's Bounce in the Multiverse

Sep 27, 2007 · Replies 6 · Sep 30, 2007

Replies: 6

Views: 3K

Explaining the Quantum Mystery: Are Parallel Universes the Answer?

Sep 25, 2007 · Replies 103 · Sep 29, 2007

4

Replies: 103

Views: 16K

How Have Advances in Cosmology Progressed Since Einstein?

Sep 25, 2007 · Replies 3 · Sep 28, 2007

Replies: 3

Views: 3K

Supernova Distance Debate: New Evidence from Astrophysics Research by H. Arp"

Sep 27, 2007 · Replies 2 · Sep 28, 2007

Replies: 2

Views: 4K

What Could Have Happened Before the Big Bang Theory?

Sep 25, 2007 · Replies 13 · Sep 27, 2007

Replies: 13

Views: 4K

Einstein-deSitter Expansion Questions v.2

Sep 24, 2007 · Replies 1 · Sep 26, 2007

Replies: 1

Views: 3K

Supernova in Our Galaxy: Impact on Earth and Frequency of Occurrence

Sep 24, 2007 · Replies 8 · Sep 26, 2007

Replies: 8

Views: 4K

Is a toroidal black hole possible?

Sep 14, 2007 · Replies 4 · Sep 25, 2007

Replies: 4

Views: 8K

Experience the Magic of Across The Universe - A Must-See Film!

Sep 23, 2007 · Replies 17 · Sep 25, 2007

Replies: 17

Views: 3K

Parallel Universes: The Mind-Boggling Reality Confirmed by Oxford Scientists

Sep 24, 2007 · Replies 6 · Sep 24, 2007

Replies: 6

Views: 4K

Einstein-deSitter Expansion Questions

Sep 18, 2007 · Replies 24 · Sep 24, 2007

Replies: 24

Views: 7K

What is the Relationship Between the Age and Size of the Universe?

Sep 24, 2007 · Replies 1 · Sep 24, 2007

Replies: 1

Views: 7K

Quantum Gravity Explained: What It Is and Resources to Learn More

Sep 24, 2007 · Replies 1 · Sep 24, 2007

Replies: 1

Views: 2K

How do QG people evolve particles into the theory?

Sep 23, 2007 · Replies 2 · Sep 24, 2007

Replies: 2

Views: 2K

Measuring Red Shift with Accuracy

Sep 22, 2007 · Replies 2 · Sep 22, 2007

Replies: 2

Views: 2K

Quantum Mechanics and the Universe

Sep 17, 2007 · Replies 19 · Sep 21, 2007

Replies: 19

Views: 5K

Does Spacetime Curve Into Hidden Dimensions? Understanding Curvature

Sep 12, 2007 · Replies 14 · Sep 21, 2007

Replies: 14

Views: 5K

Earliest time of light emission after Big Bang

Sep 20, 2007 · Replies 4 · Sep 21, 2007

Replies: 4

Views: 3K

Lambda contibutes to bending (says Wolfgang Rindler)

Sep 19, 2007 · Replies 3 · Sep 20, 2007

Replies: 3

Views: 3K

U think that the univers is realy expanding? think again

Sep 16, 2007 · Replies 10 · Sep 18, 2007

Replies: 10

Views: 4K

Civilizations in other galaxies?

Sep 15, 2007 · Replies 6 · Sep 18, 2007

Replies: 6

Views: 5K

Cold Dark Matter: Bottom-Up vs. Top-Down Structure Formation

Sep 17, 2007 · Replies 5 · Sep 18, 2007

Replies: 5

Views: 6K

Action/reaction : if we do an action that requires energy of the whole universe

Sep 15, 2007 · Replies 2 · Sep 15, 2007

Replies: 2

Views: 5K

Uncovering the Mysteries of the Universe: Big Bang Questions Answered

Sep 10, 2007 · Replies 8 · Sep 14, 2007

Replies: 8

Views: 4K

Alternative to the big bang [new scientist]

Sep 10, 2007 · Replies 5 · Sep 14, 2007

Replies: 5

Views: 4K

Is Additional Speed Beyond Orbital Velocity Needed for Escape?

Sep 12, 2007 · Replies 3 · Sep 13, 2007

Replies: 3

Views: 3K

Is the Universe Really Flat Despite the Existence of Gravity?

Sep 11, 2007 · Replies 7 · Sep 13, 2007

Replies: 7

Views: 4K

Is the Universe Flat and What Does That Mean for Its Geometry?

Sep 13, 2007 · Replies 1 · Sep 13, 2007

Replies: 1

Views: 3K

Bojo in Nature Physics July issue, probing before bigbang with quantum cosmology

Jul 2, 2007 · Replies 35 · Sep 11, 2007

2

Replies: 35

Views: 10K

What Causes Voids in the Expanding Universe?

Sep 5, 2007 · Replies 8 · Sep 11, 2007

Replies: 8

Views: 5K

Trying to Understand Time Dilaton

Sep 4, 2007 · Replies 2 · Sep 10, 2007

Replies: 2

Views: 3K

Comets Heading Towards Earth: True or False?

Aug 31, 2007 · Replies 5 · Sep 10, 2007

Replies: 5

Views: 3K

Why do some people deny the evidence for the Big Bang Theory?

Aug 9, 2007 · Replies 28 · Sep 9, 2007

Replies: 28

Views: 10K

What is the role of negative gravity in the Big Bang theory?

Sep 9, 2007 · Replies 1 · Sep 9, 2007

Replies: 1

Views: 3K

What's Wrong with My Pet Theory of Cosmology?

Sep 7, 2007 · Replies 4 · Sep 7, 2007

Replies: 4

Views: 3K

QG Light Time Arrivals & Swiss Cheese Effect

Sep 6, 2007 · Replies 1 · Sep 6, 2007

Replies: 1

Views: 4K

Are all lines through space also loops?

Aug 30, 2007 · Replies 10 · Sep 3, 2007

Replies: 10

Views: 4K

Background radiation and photons

May 14, 2007 · Replies 6 · Aug 31, 2007

Replies: 6

Views: 5K

What Triggered the Big Bang and Created Our Universe?

Aug 29, 2007 · Replies 4 · Aug 31, 2007

Replies: 4

Views: 4K

Modern Cosmology: Science or Folktale?

Aug 30, 2007 · Replies 12 · Aug 31, 2007

Replies: 12

Views: 6K

Can LQC explain the bounce of black holes?

Aug 28, 2007 · Replies 7 · Aug 29, 2007

Replies: 7

Views: 3K

Vacuum Energy and Dark Energy: Are They One and the Same?

Aug 29, 2007 · Replies 1 · Aug 29, 2007

Replies: 1

Views: 5K

Hubble's Constant: Calculating Expansion Rate

Aug 24, 2007 · Replies 7 · Aug 27, 2007

Replies: 7

Views: 5K

Singularity (Wikipedia and Mathworld definitions)

Aug 26, 2007 · Replies 26 · Aug 27, 2007

Replies: 26

Views: 10K

The Universe - books for youngsters (?)

Aug 25, 2007 · Replies 2 · Aug 27, 2007

Replies: 2

Views: 2K

Big Bang and absolute simultaneity

Aug 24, 2007 · Replies 6 · Aug 25, 2007

Replies: 6

Views: 3K

Could MAGIC IACT Reveal Insights into Quantum Gravity?

Aug 24, 2007 · Replies 1 · Aug 24, 2007

Replies: 1

Views: 4K

Observing the universe existing simultaneously with us

Aug 23, 2007 · Replies 8 · Aug 24, 2007

Replies: 8

Views: 3K

I've got an idea that i would like some help developing

Aug 22, 2007 · Replies 9 · Aug 24, 2007

Replies: 9

Views: 6K

Who was Ralph Alpher and what impact did he have on the world of physics?

Aug 22, 2007 · Replies 2 · Aug 22, 2007

Replies: 2

Views: 2K

Three video-talks on the CMB and structure of universe

Aug 21, 2007 · Replies 1 · Aug 21, 2007

Replies: 1

Views: 3K

Are we just a simulation? (Woit's message to the overlords: Dont turn us off)

Aug 19, 2007 · Replies 1 · Aug 21, 2007

Replies: 1

Views: 3K

Number 47: Uncovering Universe's Basic Structure

Aug 20, 2007 · Replies 3 · Aug 20, 2007

Replies: 3

Views: 9K

IGC Inaugural Conference (Institute for Gravitation and the Cosmos)

Aug 3, 2007 · Replies 4 · Aug 19, 2007

Replies: 4

Views: 4K

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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