Menu

Navigation

More options

Style variation

Contact us

Cosmology Forum

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

Filters

Unlock the Mystery: Dark Matter Discovery

Feb 18, 2013 · Replies 7 · Feb 18, 2013

Replies: 7

Views: 2K

Big Bang & Entropy: Proof & Theories Explained

Feb 15, 2013 · Replies 8 · Feb 18, 2013

Replies: 8

Views: 5K

Percentage of stars that become black holes

Feb 10, 2013 · Replies 10 · Feb 18, 2013

Replies: 10

Views: 8K

The farthest matter we will ever hear from

Feb 17, 2013 · Replies 3 · Feb 17, 2013

Replies: 3

Views: 2K

Question about Expansion Speed exceeding Ligth Speed

Feb 15, 2013 · Replies 3 · Feb 17, 2013

Replies: 3

Views: 2K

Solution to the cosmological constant problem

Feb 15, 2013 · Replies 6 · Feb 16, 2013

Replies: 6

Views: 3K

What do we know about Baryogenesis?

Feb 14, 2013 · Replies 3 · Feb 16, 2013

Replies: 3

Views: 2K

What is the difference between coasting and static cosmology?

Feb 14, 2013 · Replies 9 · Feb 15, 2013

Replies: 9

Views: 3K

Is the Boltzmann Brain Paradox a valid explanation for our existence?

Jan 4, 2011 · Replies 11 · Feb 15, 2013

Replies: 11

Views: 9K

Questions arisen while reading Weinberg's Cosmology

Feb 14, 2013 · Replies 4 · Feb 14, 2013

Replies: 4

Views: 2K

Dark energy and dark matter as curvature effects?

Feb 12, 2013 · Replies 11 · Feb 14, 2013

Replies: 11

Views: 4K

Could Anything Survive in the Habitable Zone Without a Host Star?

Feb 13, 2013 · Replies 5 · Feb 13, 2013

Replies: 5

Views: 2K

Positing the Big Bang as a definitive theory .

Feb 11, 2013 · Replies 7 · Feb 12, 2013

Replies: 7

Views: 3K

What is the 'fabric of the cosmos' and what drives its cosmic loom?

Jul 19, 2012 · Replies 5 · Feb 11, 2013

Replies: 5

Views: 4K

The Ostrogradski instability and f(R) theory

Feb 9, 2013 · Replies 1 · Feb 11, 2013

Replies: 1

Views: 3K

What Factors Influence the Redshift of Distant Galaxies Beyond Doppler Effects?

Oct 1, 2012 · Replies 12 · Feb 9, 2013

Replies: 12

Views: 4K

No big bang, no beginning, and no end?

Feb 8, 2013 · Replies 2 · Feb 9, 2013

Replies: 2

Views: 2K

Is the Big Bang Similar to a Black Hole?

Feb 8, 2013 · Replies 1 · Feb 8, 2013

Replies: 1

Views: 2K

Could the Big Bang Be a Result of Black Hole Cycles?

Jan 15, 2013 · Replies 10 · Feb 8, 2013

Replies: 10

Views: 4K

The expansion of time, probably ad nauseum

Jan 15, 2013 · Replies 43 · Feb 8, 2013

2

Replies: 43

Views: 7K

A possible Coasting Universe model vs ΛCDM

Feb 6, 2013 · Replies 15 · Feb 8, 2013

Replies: 15

Views: 6K

Homogeneous/Inhomogeneous particle production

Feb 7, 2013 · Replies 2 · Feb 7, 2013

Replies: 2

Views: 2K

Significance of the Huge-LQG for homogeneous universe

Feb 6, 2013 · Replies 6 · Feb 6, 2013

Replies: 6

Views: 3K

Complete solution of the ΛCDM model problems

Feb 4, 2013 · Replies 12 · Feb 5, 2013

Replies: 12

Views: 3K

What is elegant about the universe?

Feb 3, 2013 · Replies 5 · Feb 5, 2013

Replies: 5

Views: 3K

Questions on Big Bang Singularity

Feb 4, 2013 · Replies 5 · Feb 4, 2013

Replies: 5

Views: 3K

Meaning of a Flat, Open, and Closed Universe

Jan 28, 2013 · Replies 21 · Feb 4, 2013

Replies: 21

Views: 22K

The ultimate demise of the universe

Mar 30, 2012 · Replies 5 · Feb 4, 2013

Replies: 5

Views: 5K

Expansion Rate at the Big Bang: Uncovering the Role of Dark Matter

Jan 30, 2013 · Replies 5 · Feb 2, 2013

Replies: 5

Views: 2K

Is a Matterless Universe Larger than One Filled with Matter?

Jan 30, 2013 · Replies 10 · Feb 2, 2013

Replies: 10

Views: 3K

What Is the Mathematical Form of Type Ia Supernovae Light Curves?

Jan 31, 2013 · Replies 5 · Feb 1, 2013

Replies: 5

Views: 2K

What is the latest research on the Cosmic Neutrino Background?

Jan 30, 2013 · Replies 6 · Jan 31, 2013

Replies: 6

Views: 3K

New blackhole mass measuring method

Jan 30, 2013 · Replies 3 · Jan 30, 2013

Replies: 3

Views: 2K

What is the calculational definition of the 'big bang'?

Jan 25, 2013 · Replies 12 · Jan 30, 2013

Replies: 12

Views: 3K

How can the Universe be infinite and there be an infinite number of Universes?

Jan 3, 2013 · Replies 10 · Jan 30, 2013

Replies: 10

Views: 6K

How is energy density calculated

Jan 29, 2013 · Replies 2 · Jan 30, 2013

Replies: 2

Views: 2K

Rise of the Phoenix: DAMA/LIBRA Claims Detection of Dark Matter

Jan 29, 2013 · Replies 3 · Jan 30, 2013

Replies: 3

Views: 2K

How to prove the stretching of space

Dec 16, 2012 · Replies 89 · Jan 29, 2013

3

Replies: 89

Views: 17K

Estimating the number of galaxies

Jan 24, 2013 · Replies 13 · Jan 28, 2013

Replies: 13

Views: 4K

Theories of the origins of the universe

Jan 26, 2013 · Replies 7 · Jan 28, 2013

Replies: 7

Views: 3K

Tips for deriving the friedmann equations

Jan 26, 2013 · Replies 7 · Jan 27, 2013

Replies: 7

Views: 3K

What is wrong with my theory about universe expanding.

Jan 27, 2013 · Replies 3 · Jan 27, 2013

Replies: 3

Views: 2K

CMB Sphere Size: Distance & Diameter

Jan 26, 2013 · Replies 21 · Jan 27, 2013

Replies: 21

Views: 6K

No moon=no tides no tides=no life Is that entirely correct?

Jan 27, 2013 · Replies 5 · Jan 27, 2013

Replies: 5

Views: 3K

What is the value of the cosmic gravitational potential?

Jan 24, 2013 · Replies 8 · Jan 27, 2013

Replies: 8

Views: 2K

How do inflation, and the zero energy flat universe tie into one another?

Jan 26, 2013 · Replies 2 · Jan 27, 2013

Replies: 2

Views: 2K

What is the current status on MOND

Jan 19, 2013 · Replies 19 · Jan 27, 2013

Replies: 19

Views: 6K

Where does the energy vanish to when light is red shifted

Feb 17, 2012 · Replies 44 · Jan 26, 2013

2

Replies: 44

Views: 10K

The observable universe, the actual uinverse, and CMB

Jan 17, 2013 · Replies 38 · Jan 26, 2013

2

Replies: 38

Views: 8K

What causes the red-shift observed in distant galaxies?

Jan 12, 2013 · Replies 7 · Jan 26, 2013

Replies: 7

Views: 3K

Are Cosmic Strings Connected to Other Dimensions and Gravitons?

Jan 18, 2013 · Replies 3 · Jan 25, 2013

Replies: 3

Views: 2K

Big Bang to Black Holes: Could We Predict It?

Dec 18, 2012 · Replies 6 · Jan 24, 2013

Replies: 6

Views: 3K

Big Bang theory vs. the universe as we know it

Jan 23, 2013 · Replies 8 · Jan 24, 2013

Replies: 8

Views: 3K

I cant imagine the expanding universe in my head

Jan 21, 2013 · Replies 12 · Jan 24, 2013

Replies: 12

Views: 3K

Is the event horizon of a black hole physical?

Jan 11, 2013 · Replies 70 · Jan 24, 2013

3

Replies: 70

Views: 12K

Could a Variable Speed of Light Theory Challenge the FLRW Metric in Cosmology?

Jan 23, 2013 · Replies 2 · Jan 23, 2013

Replies: 2

Views: 2K

Primordial black holes as DM candidates

Jan 22, 2013 · Replies 2 · Jan 23, 2013

Replies: 2

Views: 3K

Universe expansion faster than light?

Jan 20, 2013 · Replies 3 · Jan 20, 2013

Replies: 3

Views: 2K

Question about the expansion of the universe:

Jan 14, 2013 · Replies 7 · Jan 18, 2013

Replies: 7

Views: 4K

Big Bang Origins: "Nothing" of Physics vs. Philosophy

Jan 2, 2013 · Replies 9 · Jan 18, 2013

Replies: 9

Views: 4K

Is the Universe Expanding or Has it Already Expanded?

Mar 14, 2012 · Replies 96 · Jan 17, 2013

4

Replies: 96

Views: 21K

Can torsion avoid the big bang singularity

Jan 15, 2013 · Replies 7 · Jan 17, 2013

Replies: 7

Views: 5K

Universe expansion beyond c at some distant point?

Jan 4, 2013 · Replies 9 · Jan 17, 2013

Replies: 9

Views: 3K

Perpetual acceleration of the universe expansion?

Jan 11, 2013 · Replies 6 · Jan 15, 2013

Replies: 6

Views: 3K

How Does Gravity Balance Forces Without Mass in a Pre-Big Bang Energy Scenario?

Jan 11, 2013 · Replies 10 · Jan 14, 2013

Replies: 10

Views: 3K

Why would gravity slow down the Universe's expansion?

Jan 12, 2013 · Replies 4 · Jan 13, 2013

Replies: 4

Views: 4K

Quasar Turn On z<1 Quasar Clustering

Oct 12, 2012 · Replies 2 · Jan 12, 2013

Replies: 2

Views: 3K

Most logical answer for the universe

Jan 12, 2013 · Replies 1 · Jan 12, 2013

Replies: 1

Views: 2K

Flat Universe, dark energy and accelerating expansion

Jan 2, 2013 · Replies 11 · Jan 12, 2013

Replies: 11

Views: 4K

Help: Explaining Expanding/Accelerating Universe Without Redshift Fallacy

Jan 10, 2013 · Replies 5 · Jan 11, 2013

Replies: 5

Views: 4K

Can the Multiverse Expand Without a Realm to Expand Into?

Jan 10, 2013 · Replies 22 · Jan 11, 2013

Replies: 22

Views: 5K

Thought this would be interesting - largest structure in Universe Discovered

Jan 11, 2013 · Replies 1 · Jan 11, 2013

Replies: 1

Views: 2K

Unveiling the Mystery of Dark Matter: A Comprehensive Lecture on DM

Jan 8, 2013 · Replies 2 · Jan 11, 2013

Replies: 2

Views: 2K

The lost energy of Cosmic Background Radiation

Jan 6, 2013 · Replies 23 · Jan 9, 2013

Replies: 23

Views: 5K

How can we reconcile the paradox of seeing the Big Bang?

Dec 23, 2012 · Replies 11 · Jan 8, 2013

Replies: 11

Views: 4K

Does an Infinite Universe Challenge the Laws of Thermodynamics?

Dec 24, 2012 · Replies 12 · Jan 8, 2013

Replies: 12

Views: 3K

The significance of the existence of the universe

Jan 7, 2013 · Replies 1 · Jan 7, 2013

Replies: 1

Views: 2K

Dwarf Galaxies Orbiting the Andromeda Galaxy unexplained by Dark matter

Jan 6, 2013 · Replies 3 · Jan 7, 2013

Replies: 3

Views: 4K

Could pre-big-bang evidence survive the crunch?

Jan 5, 2013 · Replies 12 · Jan 7, 2013

Replies: 12

Views: 3K

Similarities of negative absolute temperature to dark energy?

Jan 6, 2013 · Replies 6 · Jan 7, 2013

Replies: 6

Views: 4K

The equilibrium in the universe ?

Jan 5, 2013 · Replies 8 · Jan 6, 2013

Replies: 8

Views: 3K

Alpher Bethe Gamow: Factor characterizing the decrease of density with time

Jan 6, 2013 · Replies 1 · Jan 6, 2013

Replies: 1

Views: 2K

How do we determine the production of H and He during BBN?

Jan 3, 2013 · Replies 1 · Jan 4, 2013

Replies: 1

Views: 2K

SPT-SZ Survey Results: New Neutrino Species Suggested

Jan 1, 2013 · Replies 4 · Jan 2, 2013

Replies: 4

Views: 2K

Cannot stand the eternity in cyclic models

Dec 31, 2012 · Replies 13 · Jan 2, 2013

Replies: 13

Views: 3K

Entropy: Definition, Explanation & Meaning

Mar 8, 2012 · Replies 21 · Dec 31, 2012

Replies: 21

Views: 8K

Integrating Friedmann Equation of Multi-component universe respect to a and t

Dec 28, 2012 · Replies 2 · Dec 31, 2012

Replies: 2

Views: 3K

How Do You Choose What Scientific Papers to Read?

Dec 6, 2012 · Replies 4 · Dec 30, 2012

Replies: 4

Views: 2K

Higher sensitivity CMB mapper (EBEX) launched

Dec 28, 2012 · Replies 3 · Dec 30, 2012

Replies: 3

Views: 2K

Question involving space travel and the expansion of the universe

Dec 26, 2012 · Replies 3 · Dec 27, 2012

Replies: 3

Views: 2K

Unraveling the Mystery of the Universe's Origin

Dec 27, 2012 · Replies 4 · Dec 27, 2012

Replies: 4

Views: 2K

Time Before Big Bang: Stephen Hawking & Other Universes

Dec 21, 2012 · Replies 37 · Dec 26, 2012

2

Replies: 37

Views: 8K

Why do smaller black holes emit more Hawking radiation?

Dec 14, 2012 · Replies 10 · Dec 24, 2012

Replies: 10

Views: 5K

Was Energy in the Expanding Universe Traveling at the Speed of Light?

Dec 18, 2012 · Replies 19 · Dec 23, 2012

Replies: 19

Views: 4K

What Exists Beyond the Reach of the First Photon in the Universe?

Dec 17, 2012 · Replies 5 · Dec 23, 2012

Replies: 5

Views: 3K

Dark Matter and Dark Energy: WTH are they?

Dec 21, 2012 · Replies 7 · Dec 23, 2012

Replies: 7

Views: 3K

How Are We Pushing the Concept of Infinity in Multiverse Theories?

Dec 16, 2012 · Replies 34 · Dec 22, 2012

2

Replies: 34

Views: 8K

Aether Theories: Consensus on What Space is Made Of?

Dec 17, 2012 · Replies 10 · Dec 20, 2012

Replies: 10

Views: 3K

Time Delays Across Saddles: Probing Modified Gravity in the Solar System

Dec 18, 2012 · Replies 2 · Dec 19, 2012

Replies: 2

Views: 2K

Quantum Entanglement vs. Now Slices (Relativity)

Dec 16, 2012 · Replies 3 · Dec 19, 2012

Replies: 3

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.

Top