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

What Happens Inside a Black Hole's Event Horizon?

Sep 22, 2010 · Replies 105 · Sep 27, 2010

4

Replies: 105

Views: 19K

Was the Universe Always Infinite from the Moment of the Big Bang?

Sep 23, 2010 · Replies 10 · Sep 27, 2010

Replies: 10

Views: 4K

Are Matter and Space-Time the Only Things That Exist in Our Universe?

Sep 25, 2010 · Replies 1 · Sep 26, 2010

Replies: 1

Views: 2K

What/how created first brane? first source of everything what/how

Sep 24, 2010 · Replies 3 · Sep 26, 2010

Replies: 3

Views: 3K

What Are the Key Questions About Supernova Data and the Modified Milne Model?

Sep 8, 2010 · Replies 116 · Sep 25, 2010

4

Replies: 116

Views: 24K

How dark energy make universe to inflate?

Sep 11, 2010 · Replies 28 · Sep 24, 2010

Replies: 28

Views: 6K

Could Black Holes Be Tears in Space?

Sep 15, 2010 · Replies 14 · Sep 23, 2010

Replies: 14

Views: 5K

Were There Any Proposed Non-Expanding Cosmological Models Without Lambda?

Sep 19, 2010 · Replies 56 · Sep 23, 2010

2

Replies: 56

Views: 10K

Is the Planck Length real? How do we know?

Sep 15, 2010 · Replies 47 · Sep 23, 2010

2

Replies: 47

Views: 16K

Identifying the Inflaton (new paper Easson et al)

Sep 20, 2010 · Replies 3 · Sep 21, 2010

Replies: 3

Views: 2K

Looking Back Through Spacetime in the Future

Sep 15, 2010 · Replies 5 · Sep 18, 2010

Replies: 5

Views: 3K

Yet another Dark Energy question

Sep 17, 2010 · Replies 5 · Sep 18, 2010

Replies: 5

Views: 2K

Used infinity to predict that another ClamShell

Sep 12, 2010 · Replies 8 · Sep 18, 2010

Replies: 8

Views: 3K

On String Theory's Predictiveness

Sep 17, 2010 · Replies 2 · Sep 18, 2010

Replies: 2

Views: 2K

Is the Big Bang Expanding into a Preexisting Void?

Aug 31, 2010 · Replies 77 · Sep 17, 2010

3

Replies: 77

Views: 23K

Time at the edge of the universe

Sep 7, 2010 · Replies 10 · Sep 17, 2010

Replies: 10

Views: 6K

Impact of Free Will: How Much Can We Alter Universe?

Sep 17, 2010 · Replies 3 · Sep 17, 2010

Replies: 3

Views: 2K

Dark Matter Distribution Around Galaxies

Sep 16, 2010 · Replies 2 · Sep 17, 2010

Replies: 2

Views: 2K

Fine Structure Constant appears to vary across the distant sky

Sep 16, 2010 · Replies 1 · Sep 16, 2010

Replies: 1

Views: 2K

Is the Hubble Red-Shift Gravitational Instead of Doppler?

Sep 15, 2010 · Replies 14 · Sep 16, 2010

Replies: 14

Views: 4K

Where was the big bang singularity?

Aug 22, 2010 · Replies 58 · Sep 16, 2010

2

Replies: 58

Views: 15K

After Big Bang: What if Anti Mass Had Upperhand?

Dec 23, 2007 · Replies 27 · Sep 16, 2010

Replies: 27

Views: 11K

Cosmology Questions That Have Perplexed Me Over the Years

Sep 13, 2010 · Replies 3 · Sep 16, 2010

Replies: 3

Views: 3K

Fine structure constant probably doesn't vary with direction in space

Aug 29, 2010 · Replies 124 · Sep 16, 2010

5

Replies: 124

Views: 23K

Quick question about the properties of dark matter/energy

Sep 15, 2010 · Replies 5 · Sep 16, 2010

Replies: 5

Views: 2K

Virtual particles and accelerated expansion

Sep 14, 2010 · Replies 10 · Sep 15, 2010

Replies: 10

Views: 3K

Curvature in a Universe with No Cosmological Constant and Zero Density

May 9, 2008 · Replies 34 · Sep 14, 2010

2

Replies: 34

Views: 9K

Susskind and Hawking on hard determinism

Aug 23, 2010 · Replies 47 · Sep 12, 2010

2

Replies: 47

Views: 13K

Why is the speed of light in a vacuum ~299,793 km/s?

Aug 30, 2010 · Replies 24 · Sep 12, 2010

Replies: 24

Views: 6K

Infinitely Old Earth: Cambridge A Level Physics Student

Sep 8, 2010 · Replies 10 · Sep 12, 2010

Replies: 10

Views: 3K

Creation of Matter: Higgs Boson & Other Explanations

Sep 12, 2010 · Replies 2 · Sep 12, 2010

Replies: 2

Views: 2K

Evaporating black holes, a kind of flux of space?

Sep 11, 2010 · Replies 3 · Sep 12, 2010

Replies: 3

Views: 2K

Our Universe then and now, energy verses space.

Sep 10, 2010 · Replies 1 · Sep 10, 2010

Replies: 1

Views: 2K

Thoughts on Hawking's No-Boundary Proposal of Universe

Sep 4, 2010 · Replies 9 · Sep 10, 2010

Replies: 9

Views: 3K

Is Entropy the Key to Understanding Time in an Expanding Universe?

Sep 7, 2010 · Replies 4 · Sep 9, 2010

Replies: 4

Views: 2K

Can Love Transcend Across Parallel Universes?

Dec 1, 2009 · Replies 17 · Sep 8, 2010

Replies: 17

Views: 20K

Where did the energy and mass in the singularity come from?

Sep 8, 2010 · Replies 2 · Sep 8, 2010

Replies: 2

Views: 4K

Big Bang: Discovering the Reasons Behind Its Occurrence

Aug 4, 2010 · Replies 105 · Sep 8, 2010

4

Replies: 105

Views: 21K

Calcluating the Hubble Radius for an open universe?

Sep 6, 2010 · Replies 9 · Sep 8, 2010

Replies: 9

Views: 4K

What happens to time when spacetime expands

Sep 7, 2010 · Replies 3 · Sep 8, 2010

Replies: 3

Views: 3K

Is the Universe in an Eternal Cycle of Expansion and Rebirth?

Aug 17, 2010 · Replies 58 · Sep 7, 2010

2

Replies: 58

Views: 10K

Is Everything in the Universe Made of Wavelengths?

Sep 4, 2010 · Replies 4 · Sep 7, 2010

Replies: 4

Views: 4K

What is the connection between Olber's paradox and the age of the universe?

Sep 6, 2010 · Replies 6 · Sep 7, 2010

Replies: 6

Views: 3K

Temperature can it alter space time

Sep 2, 2010 · Replies 16 · Sep 6, 2010

Replies: 16

Views: 5K

Gravity center; Virtual particles near BH; Motion reality; Universe contracting

Sep 3, 2010 · Replies 24 · Sep 5, 2010

Replies: 24

Views: 5K

Doppler Effect Proven by Red Light from Distant Galaxies

Sep 5, 2010 · Replies 1 · Sep 5, 2010

Replies: 1

Views: 2K

What if the universe is shrinking instead of expanding?

Sep 3, 2010 · Replies 6 · Sep 5, 2010

Replies: 6

Views: 2K

Time as the force carrier of mass

Sep 4, 2010 · Replies 1 · Sep 4, 2010

Replies: 1

Views: 2K

Does Mass Have Latency? Investigating Colliding Galaxies

Sep 4, 2010 · Replies 3 · Sep 4, 2010

Replies: 3

Views: 2K

Cosmological Constant and Conservation of Energy

Sep 2, 2010 · Replies 1 · Sep 3, 2010

Replies: 1

Views: 3K

What Does Flat Universe Mean?

Aug 26, 2010 · Replies 5 · Sep 2, 2010

Replies: 5

Views: 4K

Question about accelerated expanding universe theory.

Aug 30, 2010 · Replies 6 · Aug 31, 2010

Replies: 6

Views: 4K

How can the Universe be flat and isotropic?

Jul 27, 2010 · Replies 28 · Aug 30, 2010

Replies: 28

Views: 8K

Why does the Universe have a net charge of zero?

Aug 29, 2010 · Replies 5 · Aug 30, 2010

Replies: 5

Views: 4K

Chalnoth case against Loop Quantum Cosmology

Aug 24, 2010 · Replies 24 · Aug 29, 2010

Replies: 24

Views: 5K

Fine Structure Constant Varies With Direction in Space

Aug 26, 2010 · Replies 6 · Aug 29, 2010

Replies: 6

Views: 3K

Could Time Symmetry Explain the Arrow of Time?

Jan 12, 2010 · Replies 15 · Aug 29, 2010

Replies: 15

Views: 5K

Is Our Understanding of the Universe Shaped by Archetypal Concepts?

Aug 27, 2010 · Replies 3 · Aug 28, 2010

Replies: 3

Views: 2K

Are We in the Middle of the Universe?

Jun 14, 2010 · Replies 13 · Aug 28, 2010

Replies: 13

Views: 3K

Is there preferred reference frame for motion in the universe.

Aug 25, 2010 · Replies 16 · Aug 27, 2010

Replies: 16

Views: 5K

Could Anti-Matter Be Moving Backwards Through Time?

Aug 26, 2010 · Replies 2 · Aug 26, 2010

Replies: 2

Views: 2K

Big Bang Cosmology: Running Hot and Cold

Aug 19, 2010 · Replies 12 · Aug 26, 2010

Replies: 12

Views: 3K

Philosophical/quantum implications of Big-Bang singularity

Aug 22, 2010 · Replies 14 · Aug 25, 2010

Replies: 14

Views: 4K

Pre Big Bang Cosmology: Is There a Consensus?

Aug 23, 2010 · Replies 12 · Aug 25, 2010

Replies: 12

Views: 6K

Can You Survive a Jump into a Black Hole?

Aug 24, 2010 · Replies 5 · Aug 25, 2010

Replies: 5

Views: 2K

Understanding Comoving Hubble Radius

Aug 23, 2010 · Replies 2 · Aug 24, 2010

Replies: 2

Views: 11K

Distance and Time: A Big Question

Aug 24, 2010 · Replies 7 · Aug 24, 2010

Replies: 7

Views: 2K

The Big Rip: Will Black Holes Be Ripped Apart Too?

Aug 23, 2010 · Replies 1 · Aug 24, 2010

Replies: 1

Views: 2K

The center of the infinite universe

Aug 20, 2010 · Replies 3 · Aug 22, 2010

Replies: 3

Views: 2K

Can Supernovae Measurements Constrain the Curvature of the Universe?

Aug 20, 2010 · Replies 12 · Aug 22, 2010

Replies: 12

Views: 5K

What Was the Total Mass Energy Density at Recombination?

Aug 21, 2010 · Replies 2 · Aug 22, 2010

Replies: 2

Views: 2K

Parsing Time in the Very Early Universe

Aug 20, 2010 · Replies 4 · Aug 21, 2010

Replies: 4

Views: 3K

What is wrong with our understanding of the universe?

Aug 13, 2010 · Replies 22 · Aug 21, 2010

Replies: 22

Views: 4K

Is the Fate of the Universe Truly Determined by Dark Energy?

Aug 20, 2010 · Replies 1 · Aug 20, 2010

Replies: 1

Views: 2K

Naive Multiverse Question: What Happens When Universes Collide?

Aug 13, 2010 · Replies 16 · Aug 20, 2010

Replies: 16

Views: 4K

Do black holes swallow dark matter?

Aug 2, 2010 · Replies 49 · Aug 20, 2010

2

Replies: 49

Views: 11K

Could 'Dark Matter' be Nutrinoes?

Aug 18, 2010 · Replies 4 · Aug 18, 2010

Replies: 4

Views: 2K

Is the standard model of cosmology flawed?

Jul 16, 2010 · Replies 11 · Aug 17, 2010

Replies: 11

Views: 4K

Big bang contradicts flat universe?

Aug 13, 2010 · Replies 10 · Aug 16, 2010

Replies: 10

Views: 3K

What would happen if gather all universe matter into one object.

Aug 11, 2010 · Replies 11 · Aug 15, 2010

Replies: 11

Views: 5K

Can Conformal Weyl Gravity be a Viable Cosmology?

Aug 14, 2010 · Replies 1 · Aug 15, 2010

Replies: 1

Views: 3K

Can TV Antennas Pick Up CMB Radiation?

Jul 31, 2010 · Replies 12 · Aug 14, 2010

Replies: 12

Views: 6K

HST ultra deep field and angular diameter

Aug 13, 2010 · Replies 1 · Aug 13, 2010

Replies: 1

Views: 2K

Is Our Universe Infinite or Spherical?

Jun 10, 2007 · Replies 48 · Aug 13, 2010

2

Replies: 48

Views: 18K

What Direction Are Galaxies Flowing in the Expanding Universe?

Aug 12, 2010 · Replies 2 · Aug 12, 2010

Replies: 2

Views: 2K

Does Cyclical Universe Theory Account for Matter Distribution Anomalies?

Aug 10, 2010 · Replies 1 · Aug 12, 2010

Replies: 1

Views: 3K

Dark Matter Missing Mass Really too Much Gravity

Aug 8, 2010 · Replies 7 · Aug 12, 2010

Replies: 7

Views: 4K

Are modern galaxies found in ancient galaxy clusters?

Aug 10, 2010 · Replies 7 · Aug 11, 2010

Replies: 7

Views: 3K

Big Bang: Space & Time Explained

Jul 12, 2010 · Replies 13 · Aug 10, 2010

Replies: 13

Views: 4K

Some slight confusion regarding the dimensionless Hubble parameter h.

Aug 10, 2010 · Replies 2 · Aug 10, 2010

Replies: 2

Views: 5K

Has an infinitely bouncing universe really been discredited?

Aug 7, 2010 · Replies 16 · Aug 9, 2010

Replies: 16

Views: 6K

Is the Japanese Miniature Universe Experiment Still Ongoing?

Aug 8, 2010 · Replies 2 · Aug 8, 2010

Replies: 2

Views: 3K

Universe contained in another universe

Aug 8, 2010 · Replies 4 · Aug 8, 2010

Replies: 4

Views: 2K

Great Graffiti Stop Motion Big Bang Big Boom

Aug 5, 2010 · Replies 2 · Aug 6, 2010

Replies: 2

Views: 3K

Can we analytically continue the Standard Model?

Aug 5, 2010 · Replies 4 · Aug 6, 2010

Replies: 4

Views: 3K

Conformal time analytical expression

Aug 5, 2010 · Replies 1 · Aug 5, 2010

Replies: 1

Views: 4K

Inflation is very unlikely less than 10^-6.6×10^7

Jul 9, 2010 · Replies 26 · Aug 4, 2010

Replies: 26

Views: 6K

Is it possible to determine if space is fixed or moving?

Jul 8, 2010 · Replies 39 · Aug 3, 2010

2

Replies: 39

Views: 6K

Slight confusion with black holes

Jul 26, 2010 · Replies 15 · Aug 3, 2010

Replies: 15

Views: 3K

Here is some weird idea: Dark matter/energy explained by negative mass matter

Aug 3, 2010 · Replies 2 · Aug 3, 2010

Replies: 2

Views: 9K

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