Cosmology Forum

Post thread
Join in expert discussion on topics revolving around cosmology. Cosmology is the origin, evolution, structure and eventual fate of the universe.
Graduate How Did Quantum Fluctuations Initiate the Big Bang?
  • · Replies 7 ·
Replies
7
Views
4K
Graduate Where are the Rules of the Universe Stored?
  • · Replies 45 ·
2
Replies
45
Views
7K
Graduate Why Is Heat Distribution Unequal in the Expanding Universe?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate What is the Ultimate Source of Energy in the Universe?
  • · Replies 37 ·
2
Replies
37
Views
8K
Graduate Further looks bigger beyond z = 1.6
  • · Replies 6 ·
Replies
6
Views
4K
Graduate What Insights Can We Gain from M87's Jet Observations?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Calculating the redshift at which radiation energy density equaled mass density
  • · Replies 4 ·
Replies
4
Views
28K
Graduate Imaginary Engine: Dark Matter & Super Symmetry Needed
  • · Replies 2 ·
Replies
2
Views
2K
Graduate The Science of the Universe: Best Papers and Testable Results
  • · Replies 1 ·
Replies
1
Views
3K
What Does the NYtimes Reveal About Dark Matter and Energy?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate What Were the Early Theories on the Accelerating Universe?
  • · Replies 9 ·
Replies
9
Views
3K
Graduate A third dimensional object has length, width and height
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Superluminal recession speed is common
  • · Replies 16 ·
Replies
16
Views
7K
Graduate Violation of Universal Speed Limit
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Are There Galaxies Whose Light Will Never Reach Us Due to Universe Expansion?
  • · Replies 9 ·
Replies
9
Views
4K
Graduate What Existed Before the Big Bang?
  • · Replies 1 ·
Replies
1
Views
2K
Size and Destiny of the Universe -nice JPG file
  • · Replies 11 ·
Replies
11
Views
4K
Graduate Are Null Points Present Between Galaxies on a Collision Course?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Problem with an infinite universe
  • · Replies 11 ·
Replies
11
Views
6K
Graduate The universe may not be expanding
  • · Replies 8 ·
Replies
8
Views
4K
Graduate What is Degeneracy of Dark Matter?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Matter-antimatter basis for dark energy
  • · Replies 4 ·
Replies
4
Views
3K
Graduate An expanding universe, part of a bigger leading edge?
  • · Replies 25 ·
Replies
25
Views
6K
Graduate Uncovering the Optimal Epoch for Life in the Universe
  • · Replies 5 ·
Replies
5
Views
2K
I have a question for everyone here
  • · Replies 19 ·
Replies
19
Views
4K
Graduate CMBR - a possible alternative explanation?
  • · Replies 15 ·
Replies
15
Views
8K
Graduate Got a link for the angular-size redshift relation?
  • · Replies 12 ·
Replies
12
Views
7K
Graduate Big Crunch or Big Rip? Universe's Future
  • · Replies 14 ·
Replies
14
Views
6K
Graduate Cosmography: Measuring Universe Expansion via Supernova Data
  • · Replies 2 ·
Replies
2
Views
2K
High School Measuring Distance to Understand Hubble Constant
  • · Replies 3 ·
Replies
3
Views
6K
Graduate Why Dark Matter? Questions on Scientific Inquiry
  • · Replies 24 ·
Replies
24
Views
5K
Graduate Solutions of Friedmann Equations
  • · Replies 8 ·
Replies
8
Views
10K
Graduate Orbits of Andromeda and Milky Way Galaxy About Each Other
  • · Replies 1 ·
Replies
1
Views
5K
Undergrad High Velocity Impact of Planets - Atomsphere question
  • · Replies 1 ·
Replies
1
Views
3K
Graduate The Elusive Nature of Dark Matter: Why Can't We Detect It in Our Solar System?
  • · Replies 7 ·
Replies
7
Views
4K
Graduate Why Dark Energy? Investigating Universe Expansion
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Is There Evidence for Handedness in the Universe?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Experiments that provide evidence for the expansion of the universe
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Can Time and Motion Be Separated in an Expanding Universe?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Big Bang and Infinite Universe Theory
  • · Replies 16 ·
Replies
16
Views
7K
Graduate What Are the Key Alternative Cosmological Models Beyond the FRLW Framework?
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Illustrating the CMB: Drawing Concentric Circles to Show Expansion Over Time
  • · Replies 6 ·
Replies
6
Views
4K
Graduate No Big Bang? Endless Universe Made Possible by New Model
  • · Replies 20 ·
Replies
20
Views
8K
Graduate Gravitational Potential Enery Problem
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Is the Universe's Oscillating Theory Inefficient?
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Could a Giant Iron Planet Form a Black Hole?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate How Do Cosmic Clocks Influence Our Understanding of General Relativity?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Is the Standard Cosmological Paradigm Explained Well by Hu and Dodelson?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Stephen Hawking's Theory of Everything and Imaginary Time
  • · Replies 21 ·
Replies
21
Views
6K
Graduate Big Bang afterglow fails intergalactic shadow test
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Chapter07.pdfCan Killing Vectors Derive the Schwarzschild Metric?
  • · Replies 1 ·
Replies
1
Views
3K
The Three Purposes of the Universe: A Revelation.
  • · Replies 109 ·
4
Replies
109
Views
14K
Graduate Is Every Point in The Universe a Microcosm of the Whole of Creation?
  • · Replies 17 ·
Replies
17
Views
5K
Graduate Is the Universe Expanding Faster Than the Speed of Light?
  • · Replies 41 ·
2
Replies
41
Views
11K
Graduate David Wiltshire: Cosmic Clocks, Cosmic Variance & Cosmic Averages
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Nucleosynthesis with the Big Bang and the Supernovas?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Will the new WMAP3 data challenge the assumption of a spatially flat universe?
  • · Replies 110 ·
4
Replies
110
Views
16K
Undergrad Why Doesn't the Night Sky Shine as Bright as the Sun Despite Infinite Stars?
  • · Replies 32 ·
2
Replies
32
Views
17K
Graduate New Guth paper-reviewing by-now-familiar scenario
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Time Measurement on Earth vs the Universe
  • · Replies 3 ·
Replies
3
Views
3K
The smartest man in universe believes in Intelligent Design
  • · Replies 110 ·
4
Replies
110
Views
32K
Graduate Why do we Still Believe in Newton's Law?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Exploring the Relation between \Gamma and H in the Early Universe
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Flatness Problem: Deriving Relation from Friedmann Eqns.
  • · Replies 7 ·
Replies
7
Views
5K
Graduate Is Energy Fully Conserved in an Expanding Universe?
  • · Replies 7 ·
Replies
7
Views
4K
Graduate Cosmological Red Shift: How Does z Change With Time?
  • · Replies 13 ·
Replies
13
Views
9K
Graduate When does the event horizon form?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Evidence for Dark Matter: Bullet Cluster X-Ray & Weak Lensing Study
  • · Replies 14 ·
Replies
14
Views
5K
Graduate Tolman Surface Brightness Test -
  • · Replies 10 ·
Replies
10
Views
6K
Graduate What are B mode and E mode signals?
  • · Replies 2 ·
Replies
2
Views
7K
Undergrad Infinite Energy and the Big Bang: Understanding Heat as Energy in Physics
  • · Replies 5 ·
Replies
5
Views
4K
Graduate New universes will be born from ours
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Friendly discussion: How do you feel the singularity came to be?
  • · Replies 15 ·
Replies
15
Views
5K
Graduate GPB: Latest News and Research Results
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Calculating Critical Density and Cosmological Constant
  • · Replies 16 ·
Replies
16
Views
32K
Undergrad Is the Conservation of Mass/Energy Challenged by the Big Bang Theory?
  • · Replies 17 ·
Replies
17
Views
6K
Graduate Why is the peak frequency of the Cosmic Microwave Background 160 GHz?
  • · Replies 2 ·
Replies
2
Views
9K
Graduate Holographic principle responsible for life?
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Another big numbers coincidence?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate First 3D Map of Dark Matter in the Universe
  • · Replies 7 ·
Replies
7
Views
5K
Undergrad Discovering Medieval Cosmology: A Public Health Student's Perspective
  • · Replies 9 ·
Replies
9
Views
4K
Energy and matter Is that all that fills our universe?
  • · Replies 12 ·
Replies
12
Views
4K
Graduate Nobel Prize in Physics 2006 (Mather and Smoot)
  • · Replies 8 ·
Replies
8
Views
4K
Undergrad The speed of light and the expansion of the universe
  • · Replies 6 ·
Replies
6
Views
5K
Graduate Is Our Consciousness Immortal Through Multiple Universes?
  • · Replies 12 ·
Replies
12
Views
4K
Graduate Is the Hyperboloid Model Truly Homogeneous and Isotropic?
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Multiverse theory, where are they?
  • · Replies 18 ·
Replies
18
Views
9K
Undergrad Critical Density: What is the Energy Density of the Universe?
  • · Replies 7 ·
Replies
7
Views
11K
Graduate Best fit three-sphere radius 130 gly (after Ned Wright)
  • · Replies 1 ·
Replies
1
Views
4K
High School Parallax Questions: Confirm Answers are Right?
  • · Replies 1 ·
Replies
1
Views
7K
Graduate What are some good reference materials for my dark matter presentation?
  • · Replies 1 ·
Replies
1
Views
5K
Graduate Inflationary vacuum and the true vacuum
  • · Replies 17 ·
Replies
17
Views
7K
Graduate Light/ universe questions from a layman
  • · Replies 26 ·
Replies
26
Views
7K
Graduate Is the Universe Really Expanding?
  • · Replies 126 ·
5
Replies
126
Views
34K
Graduate FRW from spaces of constant cuvature
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Anyone Else Deep in Cosmology Code?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Question concerning the universe & the Hubble photos
  • · Replies 11 ·
Replies
11
Views
4K
Undergrad Red Shifts and the expanding universe
  • · Replies 47 ·
2
Replies
47
Views
10K
Graduate Explaining the structure of Galaxy Filaments
  • · Replies 11 ·
Replies
11
Views
5K
Undergrad AIG Answers in Genesis: Challenging the Big Bang Theory
  • · Replies 5 ·
Replies
5
Views
4K