Search found 898 matches
- Sat Apr 03, 2010 3:57 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: The Sun's speed and direction
- Replies: 9
- Views: 1241
Re: The Sun's speed and direction
Why do stars in our neighborhood like our Sun go at velocities like 220 km/s and in similar orbital directions around the center of the galaxy? If a typical star is formed by the random gravitational collapse of an IMC what gives the new star the impetus to go in a certain predicted direction at su...
- Sat Apr 03, 2010 3:49 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: Solved: What is it? Space mystery object
- Replies: 457
- Views: 34749
Re: Space mystery object #30
Amir, would you like another crop? Or clues? Hold off. There's nothing wrong with a puzzle that needs a few days. Some of us (read: "me") have other things we need to do. A hard puzzle means I might have a chance to work on it before somebody snaps it up! Good call Chris. I managed a quic...
- Fri Apr 02, 2010 7:34 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Explanation for Dark Energy
- Replies: 48
- Views: 2248
Re: Explanation for Dark Energy
My explanation for the dark energy is ANTIGRAVITY caused by gravitational bodies themselves via equalization of the bending of space-time in the opposite way by the law of space-time equalization. Everything that is within close proximity to gravitational objects are pulled to this object, like sta...
- Thu Apr 01, 2010 10:15 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: The Sun's speed and direction
- Replies: 9
- Views: 1241
Re: The Sun's speed and direction
Why do stars in our neighborhood like our Sun go at velocities like 220 km/s and in similar orbital directions around the center of the galaxy? If a typical star is formed by the random gravitational collapse of an IMC what gives the new star the impetus to go in a certain predicted direction at su...
- Tue Mar 30, 2010 11:02 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Dark Flow
- Replies: 161
- Views: 13925
Re: Dark Flow
Well we will see, how it pans out. BTW. Its an absolute privilege, to talk about the subject I am fascinated by, to somebody with such knowledge as you Chris. Thanks.
I am done, with the dark flow, until there is more news on the subject.
Mark
I am done, with the dark flow, until there is more news on the subject.
Mark
- Tue Mar 30, 2010 2:15 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Dark Flow
- Replies: 161
- Views: 13925
Re: Dark Flow
When you wrote this ChrisChris Peterson wrote:How am I writing it off?
13.7 billion years. No more. The Dark Flow suggests you need more time. We will see.Chris Peterson wrote:There is no need for dark flow (if it exists)
Mark
- Tue Mar 30, 2010 1:28 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Dark Flow
- Replies: 161
- Views: 13925
Re: Dark Flow
I think the extremely poor choice of calling this "dark flow" leads to all kinds of ideas that are probably not very appropriate. The terminology makes it seem as if something is actively pulling on this material, but I've seen nothing to suggest this is the case. Chris. You did not know ...
- Tue Mar 30, 2010 12:35 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Dark Flow
- Replies: 161
- Views: 13925
Re: Dark Flow
This is probably complete rot, but I had fun thinking it up. Nope, What you wrote was very interesting. Your thinking out of the box. which can be useful when thinking about the universe. I have a similar image in my mind which is also probably not a true picture of the universe. But like you said,...
- Mon Mar 29, 2010 8:27 am
- Forum: The Library: Information Desk and Educational Resources
- Topic: Solved: What is it? Space mystery object
- Replies: 457
- Views: 34749
Re: What is it? Space mystery object #26
Hey owlice,owlice wrote:I remember reading that sentence in APOD and having to pick my jaw up off the floor. That's one big star!
Check this out.
![Wink :wink:](./images/smilies/icon_wink.gif)
http://www.dailygalaxy.com/my_weblog/20 ... -suns.html
This blows me away.
Mark
- Sun Mar 28, 2010 6:50 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Dark Flow
- Replies: 161
- Views: 13925
Re: Dark Flow
Oh Right. Here,s some more misquotes '' Evidence Grows for Multiverse. The fact is that this latest discovery puts the final nail in the Big Bang model, even though the die-hard bangers will refuse to see it. What the evidence reported in the story is showing is that there is enough matter to create...
- Sun Mar 28, 2010 6:01 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Dark Flow
- Replies: 161
- Views: 13925
Re: Dark Flow
The plot Thickens Quote: ''Kashlinsky speculates that the dark flow extends "all the way across the visible universe," or about 47 billion light-years, which would fit with the notion that the clusters are being pulled by matter that lies beyond known horizons''. http://news.nationalgeogra...
- Sun Mar 28, 2010 11:56 am
- Forum: The Library: Information Desk and Educational Resources
- Topic: Whats going on here?
- Replies: 16
- Views: 1506
Re: Whats going on here?
No. He was telling you , even though these stars look like they are all clumped together in one huge mass, They are not. there are still huge distances between them.wonderboy wrote:Now I don't know if your being funny or not there, but I have never felt heat on my face. was that sarcasm?
Mark
- Sun Mar 28, 2010 9:33 am
- Forum: The Communications Center: Breaking Science News
- Topic: LBL: Dark Secrets
- Replies: 0
- Views: 154
LBL: Dark Secrets
Its an interesting Web the Universe Spins. And some interesting points Made, With Some very interesting questions asked. Including, Was gravity stronger Long ago. I believe I asked this, on here.
Berkeley lab. Great lecture.
Mark
Berkeley lab. Great lecture.
Click to play embedded YouTube video.
- Sat Mar 27, 2010 6:51 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Dark Flow
- Replies: 161
- Views: 13925
Re: Dark Flow
This explains the relatively large velocity (because it was created when the attractive mass was much closer) as well as the absence of that mass in the observable universe today (it has moved beyond the horizon of what is observable from Earth). The speed of light has, Would you say, a large veloc...
- Sat Mar 27, 2010 6:06 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Dark Flow
- Replies: 161
- Views: 13925
Re: Dark Flow
To summarize: assuming the so-called dark flow represents anything other than an initial anisotropy in the primordial Universe (which may certainly be the case), it is best explained as motion induced by the force of gravity from a part of the Universe that is no longer in our observable universe, ...
- Sat Mar 27, 2010 4:36 pm
- Forum: The Observation Deck: Latest Sky Photography
- Topic: Lodriguss: UFO/Alien/Angel/Spirit/Ghosts??
- Replies: 10
- Views: 601
Re: Lodriguss: UFO/Alien/Angel/Spirit/Ghosts??
bystander wrote:Read the story and you don't have to guess
Oh, Right, yeah.
![Embarassed :oops:](./images/smilies/icon_redface.gif)
But I like dissecting photo,s. Remember the 3 suns photo? That caused a storm on here. I was glued to the forum with that.
Mark
- Sat Mar 27, 2010 3:11 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: Solved: What is it? Space mystery object
- Replies: 457
- Views: 34749
Re: What is it? Space mystery object #25
Well done owlice. Very Very well Done.
yes Amir, I thought that was hard to.
Mark
![Shocked :shock:](./images/smilies/icon_eek.gif)
yes Amir, I thought that was hard to.
Mark
- Sat Mar 27, 2010 3:03 pm
- Forum: The Observation Deck: Latest Sky Photography
- Topic: Lodriguss: UFO/Alien/Angel/Spirit/Ghosts??
- Replies: 10
- Views: 601
Re: Lodriguss: UFO/Alien/Angel/Spirit/Ghosts??
Hi Funny how the foreground is a different phenomena than the back ground. The photo makes me think, three guys running along holding neon lamps, dressed in dark clothes. While at the same time, this time laps photo was taken, somebody up above shining a light on the foreground grass. The Stars look...
- Fri Mar 26, 2010 10:47 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: Solved: What is it? Space mystery object
- Replies: 457
- Views: 34749
What is it? Space mystery object #25
What is it?
- Fri Mar 26, 2010 8:02 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Dark Flow
- Replies: 161
- Views: 13925
Re: Dark Flow
There is no need for dark flow (if it exists... there remains a good deal of uncertainty about that) to be caused by anything pulling on it. All we seem to be observing is motion, and that requires no forces. The motion could be residual, from long ago. For instance, an area of high mass could have...
- Thu Mar 25, 2010 7:58 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: Why trust type Ia, as a standard candle?
- Replies: 7
- Views: 1099
Re: Why trust type Ia, as a standard candle?
You said it yourself. that we know the intrinsic brightness of most Type Ia supernovas because we think we understand their cause and the important elements of underlying theory. The fact that there might be classes within these supernovas that haven't been recognized until recently doesn't change t...
- Thu Mar 25, 2010 7:46 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: Why trust type Ia, as a standard candle?
- Replies: 7
- Views: 1099
Re: Why trust type Ia, as a standard candle?
I sat here waiting patiently for your reply Chris. Before posting the full link.
http://www.cosmosmagazine.com/news/3362 ... page=0%2C0
Enjoy.
![Wink :wink:](./images/smilies/icon_wink.gif)
http://www.cosmosmagazine.com/news/3362 ... page=0%2C0
Enjoy.
- Thu Mar 25, 2010 7:13 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: Solved: What is it? Space mystery object
- Replies: 457
- Views: 34749
- Thu Mar 25, 2010 6:31 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: Why trust type Ia, as a standard candle?
- Replies: 7
- Views: 1099
Why trust type Ia, as a standard candle?
Why trust type Ia, as a standard candle? A post that bystander made, http://asterisk.apod.com/viewtopic.php?f=31&t=18732 Which makes me think, How can we trust that what we see in a ''standard candle'' Type Ia supernovae be, what they seem to be? ''Chandrasekhar limit with a mass of at least 2....
- Wed Mar 24, 2010 8:32 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Gravity on new rocky planets.
- Replies: 8
- Views: 944
Re: Gravity on new rocky planets.
Well, if a hypothetical Earth-like, rocky planet of uniform density had twice Earth's radius it's gravity would be double or around 20m/s^2. Now for the real mystery. How would this affect the geology, the weather, the oceanography, and the possible evolution of life??? Quick answer? To many variab...