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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
140 114,082
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 45,233
i've looked through all the threads with the search 'flyby anomaly' but i've not seen anything using galactic...
Dec23-13 10:19 PM
nearc
0 1,086
Could you please clarify for me how much each of these contribute to the red shifting of light from distant objects? ...
Dec22-13 11:33 PM
Bobbywhy
2 1,027
Hello. I asked a question a couple of weeks back about things in orbit. Now, I am watching a video on youtube about...
Dec22-13 03:29 PM
oneamp
7 1,185
Sorry, strange question, but let's do a thought experiment: if a train was moving at near light speed and hit a slow...
Dec22-13 02:43 PM
Drakkith
9 1,094
Lets say Earths atmosphere with the same composition of gases was 500 bar. Would the sky be red instead of blue...
Dec22-13 11:33 AM
sophiecentaur
5 1,245
This paper, http://arxiv.org/abs/1312.5320, discusses the possible detection of galaxies almost entirely consisting of...
Dec20-13 01:46 PM
Drakkith
2 857
I was wondering at what temperature would Titan's atmospheric particles reach escape velocity? Since Titan lacks the...
Dec19-13 07:39 PM
mfb
1 988
Hello, group! I'm wondering how to calculate the HZ for a contact binary system. Obviously, you can't use just...
Dec19-13 11:08 AM
snorkack
3 995
Question: Just as in the title. How large can a planet be and still have the earth's mass? Obviously, this depends on...
Dec19-13 07:08 AM
tadchem
11 1,382
1) What would happen if artificial satellites in various orbits above the earth exploded? Where would the fragments...
Dec18-13 06:22 AM
Jonathan Scott
11 1,453
Plasma-fire Unlike a (normal) fire, a plasma-fire combusts at excess 10 billion Kelvins (in general terms, 3.8...
Dec17-13 09:31 PM
berkeman
9 1,122
What happens to light when it reaches the edge of the universe? it couldn't keep on travelling into nothingingness...
Dec17-13 04:39 AM
Johninch
87 24,260
I asked a question recently about orbiting black holes. Thanks for the answers. So if I'm correct in my thinking,...
Dec15-13 12:48 PM
phinds
7 1,392
Assuming that an object in orbit has no means of propulsion (dead satellites, NEOs, etc.) and it remains aloft long...
Dec14-13 09:12 PM
tfr000
2 1,061
So... Theoretically, planets (that are not gas giants, or water planets) could be composed of silicon, iron, or...
Dec14-13 03:26 PM
Bandersnatch
14 1,139
Why is that as the star ages and its radius gets bigger, the frequency of the 'sound' generated by stars get lower? Is...
Dec13-13 10:10 AM
subzero0137
0 913
at about 45 degrees as view from south western france , this isnt a star as it doesnt twinkle its not a planet as it...
Dec12-13 07:43 AM
Drakkith
10 1,347
Ive been thinking about the movement of things recently. How we measure things here on earth but for some reason we...
Dec12-13 04:34 AM
TumblingDice
7 1,041
The recent discovery of a warm super-Jupiter http://www.physicsforums.com/showthread.php?t=727440] raises tantalizing...
Dec11-13 09:49 PM
Chronos
2 1,147
Giant Alien Planet Discovered in Most Distant Orbit Ever Seen...
Dec11-13 03:18 PM
Chronos
6 2,065
People are saying that Kepler 22b looks like it may harbour life. How could we ever know? I was just wandering, but...
Dec10-13 06:34 PM
Astronuc
2 1,004
As far as avoiding a killer asteroid in the future, I have what I consider to be a simple solution. Japan has already...
Dec10-13 04:10 PM
tinypositrons
35 4,553
Do you have to "stick to the left of your orbit" or "give way to the unmanned vessel"?
Dec10-13 02:19 AM
tinypositrons
3 1,093
Hi, I try to solve excercises from the book Stellar Atmospheres by Mihallas. I'm stuck on this one: By use of...
Dec8-13 05:09 PM
lakmus
0 930
Hi! I'm having a problem with one assignment and I would really need som help. The question is: The Chandra...
Dec8-13 04:04 PM
Redbelly98
1 1,003
How does the Oberth Effect work, and why? Why would acceleration applied at one point in an orbit be different from...
Dec8-13 08:54 AM
mrspeedybob
3 1,569
Is a solar system possible where there was constant planetary alignment (syzygy) Let's make it the simplest...
Dec7-13 08:01 PM
256bits
7 1,654
I am not so good in astronomy but i had desire to know what was in there right from my childhood. can you please clear...
Dec6-13 07:06 PM
Simon Bridge
3 1,056
Lets say Earth lost its magnetic field 4 billion years ago and lacked geological activity like mars. Would the...
Dec6-13 03:44 PM
Damo ET
11 1,781
Why sun rays are not considerably hot when reaching earth..? is there any specific reason for the sun rays to lose its...
Dec6-13 04:19 AM
Simon Bridge
3 1,115
Hey I'm trying to find out the maximum velocity that ISON had, should I use Newtonian physics or general relativity...
Dec5-13 09:32 AM
ilikescience94
24 2,342
We can determine what kind of elements exist in different planets by observing electromagnetic waves from planets'...
Dec3-13 03:43 PM
Solon
16 3,205
Given: According to my reference (An Introduction to Modern Astrophysics), I should start with this equation: r =...
Dec2-13 09:20 AM
ecastro
0 947
What are the odds that there is a different event horizon for dark matter?
Dec1-13 10:09 PM
Drakkith
1 863
Does the center of the galaxy intersect the ecliptic? If so, is it a temporary coincidence?
Dec1-13 06:33 PM
marcus
1 1,322
Do we have any evidence that either: 1. There exist stellar black holes which orbit supermassive black holes in...
Dec1-13 05:27 PM
EskWIRED
3 1,001
Hi, I'm basically wondering why there is any residual angular momentum in the universe left over from the big bang...
Dec1-13 10:45 AM
mfb
1 1,033
This paper, http://arxiv.org/abs/1311.6806, discusses Kepler mission results. The authors deduce that 5.7% of sun-like...
Dec1-13 05:34 AM
Damo ET
9 1,578
I saw a thread on ison but it was inactive for days.So i have decided to make one.So here are latest pics of ison from...
Nov29-13 09:12 PM
nil1996
10 1,282
In the Pinwheel Galaxy (a.k.a. M101, NGC 5457), 20,870,000 light years away, there is an Ultra Luminous X-Ray source...
Nov29-13 11:50 AM
|Glitch|
0 1,034

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