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 The universe's size : always infinite?
  • · Replies 47 ·
2
Replies
47
Views
12K
Discussing the Big Rip Theory: Have You Heard About It?
  • · Replies 10 ·
Replies
10
Views
8K
Graduate More on faster than light neutinos
  • · Replies 1 ·
Replies
1
Views
2K
Graduate How Should We Visualize Dark Matter Around Spiral Galaxies?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Existance of time before big bang
  • · Replies 31 ·
2
Replies
31
Views
8K
Graduate Big Bang or Multiverse: Which Theory Explains Our Universe Better?
  • · Replies 10 ·
Replies
10
Views
5K
Graduate Can cosmologist mathematicians compute all the way to absolute nothingness?
  • · Replies 40 ·
2
Replies
40
Views
8K
Undergrad Could gravity be a convergence of waves?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate How Does the Empire State Building Help Us Understand the Big Bang?
  • · Replies 7 ·
Replies
7
Views
4K
Graduate Link between Universe mass density and Cosmic Microwave Background energy
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Does spacelike separation have anything to do with non-locality?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Quantum Fluctuations and the Origin of the Cosmic Microwave Background Radiation
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Gigantic Black Holes vs White Holes: How Can We Know?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Is the Expanding Universe Theory Reversed? A Scientist's Perspective
  • · Replies 19 ·
Replies
19
Views
5K
Undergrad How do they know what happened in the first second
  • · Replies 8 ·
Replies
8
Views
3K
Dwarf galaxies suggest dark matter theories may be wrong
  • · Replies 5 ·
Replies
5
Views
4K
Undergrad Intelligent life in the universe
  • · Replies 1 ·
Replies
1
Views
4K
Where can I find captivating videos for my Big Bang presentation?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate The Mystery of CMB Polar Anisotropy and its Implications on Cosmology
  • · Replies 20 ·
Replies
20
Views
6K
High School How do we know everything in the universe is made of atoms?
  • · Replies 13 ·
Replies
13
Views
11K
NASA Discovers Planet With 2 Suns
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Supermassive BH feeding on Dark matter
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Gravitational Waves: Interfering, Diffracting & More
  • · Replies 20 ·
Replies
20
Views
5K
Graduate Unify Fields in Big Bang: Quest for Origin
  • · Replies 11 ·
Replies
11
Views
3K
Undergrad Has anyone tried Victor Stenger's MonkeyGod toy universe program?
  • · Replies 3 ·
Replies
3
Views
6K
Graduate Can infinity fit in the palm of your hand
  • · Replies 34 ·
2
Replies
34
Views
7K
Graduate Why Do Scalar Fields in Hybrid Inflation Model Diverge with Large Mixing Term?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate I would like to know more about the beginning of time in terms of
  • · Replies 1 ·
Replies
1
Views
2K
Graduate How does the expansion of the universe stretch light?
  • · Replies 57 ·
2
Replies
57
Views
21K
Graduate Where are the future background microwaves now
  • · Replies 5 ·
Replies
5
Views
3K
Graduate So, if space expands (measurements gets larger) in the presence of low
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Gravity, information, and cosmology (was Thoughts about the universe )
  • · Replies 26 ·
Replies
26
Views
7K
Undergrad Where did the freidman equation come from?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Low entropy 3 mins from big bang query
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Where would the observation of a static Universe have lead us?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate CMb Photons: Finite or Infinite?
  • · Replies 8 ·
Replies
8
Views
6K
Undergrad Unveiling the Mystery of Dark Energy
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Is there anything in our universe that we can't model with a mathematical set?
  • · Replies 8 ·
Replies
8
Views
2K
Graduate What is the Current Value of the Mass Parameter for Quintessence?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Questions About Universe, Time & Fire: Answers Wanted
  • · Replies 8 ·
Replies
8
Views
3K
Graduate What does time mean in the context of BB theory?
  • · Replies 15 ·
Replies
15
Views
4K
Graduate The redshift from recession or expansion
  • · Replies 3 ·
Replies
3
Views
3K
Graduate A Static and Eternal Universe vs The Second Law of Thermodynamics
  • · Replies 17 ·
Replies
17
Views
8K
Graduate Light from the big Bang/Inflation
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Does Vacuum Energy Drive the Expansion of the Universe?
  • · Replies 14 ·
Replies
14
Views
6K
Graduate Why the Hubble Parameter Decreases to .85 of Today's Value
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Dark matter as matter in parallel universes
  • · Replies 93 ·
4
Replies
93
Views
30K
Graduate Furthest Visible Galaxies: Estimating the Cut-Off Point
  • · Replies 8 ·
Replies
8
Views
4K
Graduate What Caused the Singularity & Is There Anything Before the Universe?
  • · Replies 51 ·
2
Replies
51
Views
13K
Graduate The universe, planck time and the game of life
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Stephen Hawking on Discovery's curiosity
  • · Replies 64 ·
3
Replies
64
Views
13K
Undergrad Mass-energy equivalence and how it relates to the content of the universe
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Expansion of the Universe Violates Conservation of Energy?
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Cosmic inflation and gravitational waves.
  • · Replies 27 ·
Replies
27
Views
6K
Graduate Fractal dimension of the universe = 2?
  • · Replies 1 ·
Replies
1
Views
5K
Graduate What is the fabric of spacetime made of?
  • · Replies 17 ·
Replies
17
Views
9K
Graduate Unraveling the Big Bang: Questioning the Laws of the Universe
  • · Replies 10 ·
Replies
10
Views
5K
High School Why the process of recombination is called re combination?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Scale invariance and bubble universes
  • · Replies 2 ·
Replies
2
Views
5K
Graduate How do gravity and cosmological expansion strike an equilibrium?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Simple Supersymmetry Bites the Dust
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Will there be matter at the end of the universe?
  • · Replies 17 ·
Replies
17
Views
5K
Graduate Antineutrinos After Big Bang: Where Are They?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate How Can We See Light from 400K Years After the Big Bang?
  • · Replies 14 ·
Replies
14
Views
5K
Graduate Geometry of the Universe: Euclidean or Hyperbolic?
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Is the expansion rate of the universe slowing?
  • · Replies 15 ·
Replies
15
Views
5K
Graduate Zero-point energy stops space shrinking?
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Size of universe at Big Bang without space?
  • · Replies 26 ·
Replies
26
Views
7K
Graduate Proof of the expansion of the universe-cosmological redshift?
  • · Replies 8 ·
Replies
8
Views
4K
Hi nice to be in a Universe I understand
  • · Replies 6 ·
Replies
6
Views
2K
My theory on black holes/Big Bang.
  • · Replies 8 ·
Replies
8
Views
2K
Graduate Any papers out that show the observed z vs. t?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate What exactly is meant by the universe at late times ?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Zero-point energy cancelled by its gravitational energy?
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Laws of Physics not applicable at the 'moment of creation'?
  • · Replies 14 ·
Replies
14
Views
5K
Graduate Pioneer anomaly not gravitational
  • · Replies 3 ·
Replies
3
Views
3K
Graduate What is the Probability of Existence?
  • · Replies 8 ·
Replies
8
Views
4K
Graduate How Can 96% of the Universe Remain Unobservable?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate How would the Big Rip scenario interact with virtual particles?
  • · Replies 7 ·
Replies
7
Views
5K
Graduate Dark Energy Explained: A Layman's Perspective
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Is Evacuating the Universe Possible Before Its Inevitable End?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Is the Universe Truly an Isolated System?
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Calculating the size of the universe?
  • · Replies 11 ·
Replies
11
Views
4K
Graduate Steady state state model consistent with Big Bang
  • · Replies 2 ·
Replies
2
Views
4K
Graduate A question about time and universe expansion
  • · Replies 22 ·
Replies
22
Views
6K
Graduate How does Heat Death work in a universe with negative curvature?
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Can We Observe Our Own Galaxy's Development in its Early Stages?
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Latest result for dark energy's equation of state
  • · Replies 10 ·
Replies
10
Views
5K
Graduate Amateur question: isotropy and the cosmologic principle
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Does the Second Law of Thermodynamics Apply to Cosmology?
  • · Replies 27 ·
Replies
27
Views
7K
Graduate Do Hartle-Hawking and Hawking-Turok Models Align with a Flat Universe?
  • · Replies 1 ·
Replies
1
Views
4K
Graduate Will Red Shift Eventually Make Distant Light Unobservable?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Zero-point energy in empty space
  • · Replies 1 ·
Replies
1
Views
3K
Graduate A de Sitter like Universe with matter
  • · Replies 5 ·
Replies
5
Views
3K
Graduate How would a white light look in a universe where red light is the brightest?
  • · Replies 5 ·
Replies
5
Views
4K
Graduate The Observations of the Dark Flow
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Parallel universe attracting galactic clusters
  • · Replies 15 ·
Replies
15
Views
6K
Graduate Constant Hubble parameter -> accelerating Universe?
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Proof for the Impossibility of Higher and Lower Dimensions
  • · Replies 13 ·
Replies
13
Views
5K
Graduate How Does Finite Matter from the Big Bang Relate to the Quilted Multiverse?
  • · Replies 3 ·
Replies
3
Views
5K