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Quality answers to common cosmology questions
Jul23-14 11:07 PM Greg Bernhardt 
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Jan16-12 Greg Bernhardt
To have an enjoyable cosmo forum we needed a balance between mental freedom on the one hand and a shared knowledge...
Aug2-14 07:51 PM
493 165,582
The new A20 tabular calculator lets you look at changing geometry out to about 88 billion years according to the...
Jun11-14 11:00 AM
65 44,664
If our universe is expanding and light travels at a finite speed, then, will there be a time in future, where we won't...
Mar15-06 03:26 PM
17 2,948
Hello, I'm new here and I have a question I hope you might help me with... Might "dark energy" be a natural...
Feb9-06 10:52 PM
65 6,931
Suppose the universe is bounded and not infinite, would it require more dimensions for the universe to curve back upon...
Feb15-06 06:31 AM
20 3,047
Hi all, I was wondering what some of you thought about 'Information Theoretic Process Physics'? The topic seems...
Mar5-06 06:15 PM
2 2,851
Kaku's 'Hyperspace' is currently inspiring my higher-dimensional imaginings. I'm trying to imagine what one would see...
Feb9-06 01:10 AM
10 1,858
What is the difference between particle horizon and cosmological event horizon?
Feb9-06 01:29 AM
5 2,614
This should throw another spider into the web: As far as I can...
Feb25-06 11:41 AM
37 4,265
Lambda (the cosmological constant) is frequently refered to as a sort of "negative gravity": instead of attractive...
Feb12-06 02:02 AM
2 1,447
Hello all... Hope you'll allow a complete novice to sneak in for a moment or two with a couple of questions: ...
Feb13-06 04:16 AM
2 1,709
Please help.... This is what I came up with on my own and I was wondering if there is already a thought process or...
Feb14-06 01:09 PM
2 2,884
Scientists occasionally take the time to give planetarium level tours. I'm particularly fond of these papers. They...
Feb18-06 11:12 PM
0 1,145
Hello, I think this is a good theoretical question (hypothetical question) to ask. What I am interested in figuring...
Mar19-06 07:48 PM
12 2,018
I have long wondered about this. When light takes x number of billion years to reach earth, we judge that the star...
Mar4-06 01:09 AM
8 3,017 :uhh: I wonder what hapens when unvisers crashers into...
Feb23-06 06:55 PM
0 1,521 Authors: H. Balasin, D. Grumiller Comments: 11 pages revtex4, 4 eps figures...
Feb25-06 01:30 AM
2 1,858 Authors: Ari Brynjolfsson Comments: 8 pages, 4 figures, presented at APS...
Feb25-06 01:23 AM
5 2,511
Einsteinís relativity states that gravity propagates at the speed of light. How can a black hole have a gravitational...
Mar4-06 06:26 PM
2 2,052
A recent study using the VLT array has measured the temperature and size of dark matter clumps. Interestingly enough,...
Mar2-06 12:17 AM
5 1,889
Hi all, I'm currently taking a course in introductory cosmology, last quarter I had an introductory course in...
Mar5-06 11:38 AM
3 2,292
What force is stronger, Gravity or Magnetism? I know that magnetism in general is stronger here on earth but what...
Mar12-06 01:34 AM
6 6,332
So when photons are created they carry the energy away from the system at the speed of light, so basically can you...
Mar5-06 01:58 AM
4 4,173
There are several pieces of evidence to suggest that DM is a real artifact of the universe. 1. Nearly flat rotation...
Mar6-06 02:18 AM
0 1,208
What chances would you give the different candidates to actually make up (the major constituent of) the dark matter?...
Mar16-06 01:31 AM
76 5,358
I was just thinking that whether changes have any speed. Suppose we have a system in which a bodyA is rotating ...
Mar13-06 05:29 AM
4 1,560
Dark energy: Mystery of the Millenium T. Padmanabhan This is an impressive...
Mar9-06 01:28 AM
5 1,920
I have a question I've wondered about for some time. When astronomers say the furthest objects seen are roughly 13 -...
Mar21-06 01:26 AM
8 1,535
Hello. I am just curious if anyone else imagines what I imagine whenever I hear about the universe expanding at an...
Mar16-06 01:20 AM
2 1,651
Okay, I understand that the universe is expanding. I also understand that in 1998 Cosmologist discovered that the...
Mar17-06 05:20 AM
2 1,324
Specifically LGC is dual to RS theory with an extra (large) time-like dimension, as reported by Parampreet Singh today...
Mar15-06 01:48 PM
1 2,632
Hello, All, I hope I am not out of line here, this is the only cosmology forum I could find to ask a few...
Mar17-06 01:32 PM
9 1,606
The newly release WMAP data supports the Inflation model that the universe expanded from subatomic scales to...
Mar17-06 03:36 PM
ray b
2 2,349
Given that Dark energy supplies negative pressure: Does it have mass? Does it curve space? If so, does it help to...
Mar31-06 02:59 PM
10 3,186
Regarding Universe Expansion: Does the fabric of SpaceTime play a role in regulating the expansion of the universe?...
Mar20-06 09:49 PM
3 1,500
Hey, I read about arbitrary elements sometime ago. Could anybody tell me what affects the values of these? And I also...
Mar21-06 06:08 PM
Soul Surfer
2 2,099
(if) our universe is closed and finite, would it become (soaked) in radiation more readilly than an open infinite...
Mar22-06 02:35 PM
1 1,198 Perhaps expansion has been going on forever and size...
Mar26-06 07:01 PM
2 1,418
What are the (basic) problems with main stream theories of cosmology ? i do not want crackpotery, just what the...
Mar29-06 01:02 PM
33 3,126
I know that inflation is the rapid acceration of space some time after the big bang, but are there theories that...
Mar26-06 12:21 PM
1 1,624
In case anyone is interested, here is a new paper just out. Any comment?
Mar29-06 11:45 AM
8 1,782
Here is an interesting paper, IMO: The Hubble Constant: A Summary of the HST Program for the Luminosity...
Mar29-06 12:54 AM
4 1,892

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