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Jan16-12 Greg Bernhardt
aandc, library, reference Sticky Thread Pinned: A&C reference library ( 1 2 3 ... Last)
Use this topic to post links to helpful/informative websites about astronomy & cosmology.
Jul3-14 06:29 PM
marcus
140 111,260
Hellfire requested that I post a list of classic papers that one could use for reference when trying to understand the...
Nov28-12 01:12 AM
stargazer3
17 44,406
Now that other solar systems have been discovered, as well as binary and trinary star systems, is the helio-geocentric...
Jun25-12 08:48 AM
tiny-tim
23 3,684
Hello, I am a general physicist, pursuing it for fun. I work in solar, and the other day while driving up to...
Jun24-12 07:26 AM
twofish-quant
10 2,541
It is closer to Sun than the distance between Sirius A and B. Yes I know that the Sun wound't expand so much to...
Jun17-12 02:55 AM
qraal
4 2,178
If there were a star which was almost, but not quite massive enough to become a black hole it seems as though...
Jun18-12 01:48 PM
Drakkith
19 2,512
There have been a few threads of late on the multiverse concept in cosmology, and whether it can be viewed as a...
Jun18-12 03:27 AM
Ken G
43 5,529
The relationship between space (or spacetime) and matter is giving me some trouble. If the universe was created (all...
Jun20-12 03:09 AM
clamtrox
2 1,305
In the hunt for antimatter galaxies, the tools that we are currently using look for gamma rays that would be emitted...
Jun17-12 11:56 PM
twofish-quant
7 2,160
guys im quite interesting when some people talk about flat geometry universe they also relate this to spatially...
Jun20-12 08:50 AM
Naty1
3 1,878
Forgive me, for i do not have any degrees in physics.:shy: If 1 large object like a planet were to orbit near another...
Jun20-12 03:31 PM
vociferous
7 2,151
I'm new to this forum but... Is our universe a Spec or not? I hope it isn't can you guys provide proof? It has...
Jun17-12 03:46 PM
Integral
5 2,379
We "see" distant objects as they were , sometimes, very, very, long time ago. I assume these images are all in the...
Jun22-12 03:10 PM
BadBrain
15 3,006
Well, I've commented on others' questions on a number of occasions, but something just occurred which has thrown me...
Jun19-12 03:12 AM
NeuronsAtWork
15 2,555
A9: Supernova Remnants Consider a supernova explosion in the outer 4M⊙ of a dying star, ejected at a speed of 5000...
Jun19-12 12:18 AM
Chronos
3 1,321
How are measurements done in the Doppler Orbitography Radiopositioning integrated by satellite.Please tell in...
Jun20-12 08:57 AM
Naty1
1 818
Hi all Currently, Voyager 1 is about 120 AU from the Sun. I wonder how big (or small) and bright would the Sun be...
Jun27-12 07:17 PM
Dickfore
5 2,439
Hi! I was just wondering if anyone knows where I can find a software/algorithm that can give me the postion of the...
Jun21-12 08:30 AM
phyzguy
3 2,529
We once though that the rate of expansion over that universe was slowing down. However, we now see that it's actually...
Jun20-12 02:59 AM
clamtrox
5 1,360
Hello everyone. I am trying to calculate the focal points of the ellipse traced by a planet in orbit around a star,...
Jun19-12 01:09 PM
CarlosMarti12
0 1,153
I hope I can make sense out of this question. Suppose I have an image of the sky and know on that image say the RA/Dec...
Jun19-12 09:47 PM
solarblast
0 775
I'm a fan. Not a physicist or astronomer.. But this question is bothering me. If the mass of an object increases to...
Jun21-12 03:21 PM
mathman
1 883
Hello everyone! I have calculated the velocities required for an orbiting body to follow a circular, parabolic, and...
Jun21-12 03:23 PM
mathman
1 1,173
Ok, I know neutron stars are mainly composed of neutrons. But also, they have some protons and normal nuclei at their...
Jun29-12 10:27 AM
zonde
31 3,051
I'm doing a summer internship and my supervisor is currently away and uncontactable. He left me details of certain...
Jun21-12 09:17 AM
Peb63
2 1,107
"New results from NASA's Interstellar Boundary Explorer (IBEX) reveal that the bow shock, widely accepted by...
Jun21-12 10:27 AM
Storm89
7 1,871
All of you may have heard this. Without the Moon, Earth's axis would fly wildly out of control due to the other...
Jun21-12 03:27 PM
iced199
2 804
Hey guys, I'm studying in my final year, physics as an undergraduate student, and we have to complete a research...
Jun24-12 06:03 PM
Bobbywhy
15 1,851
It is generally stated that observed baryon to photon density (about 6.1x10^(-10)) is too small. What is the reason?...
Jun24-12 04:08 AM
AnTiFreeze3
1 1,113
I'm just watching a program called "The Universe - Parallell Universes". They keep insisting that every possibility...
Jun29-12 02:32 AM
ImaLooser
16 2,061
When a satellite is affected by resistance against orbit motion, for example from thin atmosphere or solar wind, it...
Jun23-12 02:08 PM
Filip Larsen
3 1,267
Quasars are galaxies which are very active at centre pulsars are dense stars.... Since pulsars rotate very fast it...
Jun24-12 04:12 AM
Mehrdad1
4 1,146
If we calculate Birth of Time then T= 0 or T ≠ 0. If Big Bang cause time then should we consider Big Bang time T =...
Jun25-12 12:41 PM
Chronos
2 1,379
At Earth orbit, above the atmosphere, the solar power flux is roughly 1400 watts per square metre. This corresponds to...
Jun27-12 05:22 PM
D H
7 1,289
Hi. I ran across this: http://physics.jamesbaugh.com/quanta.html QUOTE: "It is a problem of assuming values...
Jun26-12 05:31 AM
twofish-quant
3 1,546
A comet near the sun whose orbit is________ would never be near the sun again is called what? My options are...
Jun28-12 08:24 AM
Integral
7 2,556
I cant get my dsi pro II to produce a live view image. I either get a black screen or a grey screen with pepper dots....
Jun29-12 05:37 PM
Chronos
10 1,335
Ok, this is something that I've been trying to figure out for a while now. Where does the energy for a supernova...
Jun27-12 08:35 PM
Drakkith
2 874
The frequency of supernovas in our galaxy is about one per century. Has there been a supernova in the Andromeda Galaxy...
Jun29-12 05:03 AM
Drakkith
4 2,060
I was just reading up about Halley's Comet in Wikipedia ( http://en.wikipedia.org/wiki/Halley's_Comet ), and I came...
Jun29-12 04:21 PM
BadBrain
2 1,538
Hello i got a list already (Which cost me a good amount of money!) But after buying it i analyzed and get that its...
Jun29-12 01:55 AM
Chronos
1 1,083
how did pop3 stars grow to sizes greater then 100 solar masses? cheers
Jun29-12 05:40 AM
goldsax
0 685

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