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Where is Earth in this Galaxy?

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The Milky Way has a diameter of 100,000 light years, so at what radius is our solar system from the center approximately?
50,000 light years 0%  0%  [ 0 ]
45,000 light years 5%  5%  [ 1 ]
40,000 light years 10%  10%  [ 2 ]
35,000 light years 14%  14%  [ 3 ]
30,000 light years 10%  10%  [ 2 ]
25,000 light years 43%  43%  [ 9 ]
20,000 light years 0%  0%  [ 0 ]
15,000 light years 0%  0%  [ 0 ]
10,000 light years 5%  5%  [ 1 ]
5,000 light years 0%  0%  [ 0 ]
0 light years 0%  0%  [ 0 ]
Just want to see results 14%  14%  [ 3 ]
Total votes : 21

ruveyn
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12 Mar 2009, 10:15 am

b9 wrote:
the universe revolves around me.
wherever i go i am here in the center of the universe.
there is as much distance to my left as there is to my right. there is as much distance above me as there is below me.
therefore i am at the center of the universe.

or so it seems to me


All true, but it doesn't say how far from the Galactic Center (there is one) our solar system is. I read somewhere that we are about 2/3 of the way from the Center to the Rim.

ruveyn



Kilroy
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12 Mar 2009, 11:20 am

iamnotaparakeet wrote:
Pretty cool Spudnik.



do you even believe in planets :roll:



iamnotaparakeet
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12 Mar 2009, 11:25 am

Kilroy wrote:
iamnotaparakeet wrote:
Pretty cool Spudnik.



do you even believe in planets :roll:


Why the heck... of course... :roll:



Kilroy
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12 Mar 2009, 11:28 am

I can't wait until new life comes-and kicks the crap out of humanity's religions

I'd laugh and laugh



iamnotaparakeet
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12 Mar 2009, 11:33 am

Kilroy wrote:
I can't wait until new life comes-and kicks the crap out of humanity's religions

I'd laugh and laugh


Out Of The Silent Planet was C.S. Lewis ideas about possible extra terrestrial life. I have a feeling that the U.S. military would behave like Dr Weston and Devine in regard to them though.



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12 Mar 2009, 11:35 am

well look at it this way-if there are aliens-they are obviously years ahead of us-to be able to get here, and obviously would have more answers then us
and I am sure-we are all wrong



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12 Mar 2009, 11:45 am

Kilroy wrote:
well look at it this way-if there are aliens-they are obviously years ahead of us-to be able to get here, and obviously would have more answers then us
and I am sure-we are all wrong


Yes, they could very well be like the Seroni who had disruptor technology.



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12 Mar 2009, 11:50 am

or they could be like try tyranids
http://en.wikipedia.org/wiki/Tyranids
and eat us all



Haliphron
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12 Mar 2009, 1:53 pm

Kilroy wrote:
I can't wait until new life comes-and kicks the crap out of humanity's religions

I'd laugh and laugh



Thats a BIG part of the motivation to develop sentient, autonomous robots. :D



Death_of_Pathos
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12 Mar 2009, 2:54 pm

iamnotaparakeet wrote:
Interesting other trivia:

Where is most of the angular momentum in the solar system:

The sun? Or the planets and asteroid belt?


With no calculations to back it up, I would have to assume the Sun. It's sheer mass, and the general understanding we have of solar formation points to the same conclusion.

It might be more interesting to consider which body has the most angular momentum, relative to it's mass. This would favor bodies that A) are more rapidly spinning B) have a larger amount of mass further from their center of rotation (possible less dense in general).

This might well go to fragments of high energy, nearly-head-on collisions, though.

Haliphron wrote:
Thats a BIG part of the motivation to develop sentient, autonomous robots.


Slippery slope. Sentient autonomous robots are one way to kick start a technological singularity, which is agreed to be a good way to destroy a civilization (and quite possibly its composite elements as well, such as classical organic life).

I'm all for advances in scientific and technological research, but it is certain to end in cataclysmic disaster if not for the temperance of ethos, history, and ontology.

If not for skills yet mastered.

Could there be no way to learn them except at risk of annihilation; trial-by-fire? Possibly. Probably, I think. The risk is plainly unacceptable with concern to the survival of our species without prior, large-scale, stable, extra-solar colonization.



iamnotaparakeet
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12 Mar 2009, 3:58 pm

Death_of_Pathos wrote:
iamnotaparakeet wrote:
Interesting other trivia:

Where is most of the angular momentum in the solar system:

The sun? Or the planets and asteroid belt?


With no calculations to back it up, I would have to assume the Sun. It's sheer mass, and the general understanding we have of solar formation points to the same conclusion.

It might be more interesting to consider which body has the most angular momentum, relative to it's mass. This would favor bodies that A) are more rapidly spinning B) have a larger amount of mass further from their center of rotation (possible less dense in general).

This might well go to fragments of high energy, nearly-head-on collisions, though.



Found a link:
http://www.zipcon.net/~swhite/docs/astr ... entum.html



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12 Mar 2009, 6:05 pm

Death_of_Pathos wrote:

Slippery slope. Sentient autonomous robots are one way to kick start a technological singularity, which is agreed to be a good way to destroy a civilization (and quite possibly its composite elements as well, such as classical organic life).

I'm all for advances in scientific and technological research, but it is certain to end in cataclysmic disaster if not for the temperance of ethos, history, and ontology.

If not for skills yet mastered.

Could there be no way to learn them except at risk of annihilation; trial-by-fire? Possibly. Probably, I think. The risk is plainly unacceptable with concern to the survival of our species without prior, large-scale, stable, extra-solar colonization.


So I take it you're not in favor of eventually human extinction..... :?



ruveyn
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12 Mar 2009, 6:49 pm

iamnotaparakeet wrote:
Death_of_Pathos wrote:
iamnotaparakeet wrote:
Interesting other trivia:

Where is most of the angular momentum in the solar system:

The sun? Or the planets and asteroid belt?


With no calculations to back it up, I would have to assume the Sun. It's sheer mass, and the general understanding we have of solar formation points to the same conclusion.

It might be more interesting to consider which body has the most angular momentum, relative to it's mass. This would favor bodies that A) are more rapidly spinning B) have a larger amount of mass further from their center of rotation (possible less dense in general).

This might well go to fragments of high energy, nearly-head-on collisions, though.




Found a link:
http://www.zipcon.net/~swhite/docs/astr ... entum.html


The angular momentum of the solar system is the sum of the angular momenta of each of its mass points about the center of mass. It is an extensive quantity, a vector associated with the system, not any particular point.


See the wiki article on angular momentum or any standard text on classical mechanics such as Goldstein.

ruveyn



iamnotaparakeet
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12 Mar 2009, 6:54 pm

ruveyn wrote:
iamnotaparakeet wrote:
Death_of_Pathos wrote:
iamnotaparakeet wrote:
Interesting other trivia:

Where is most of the angular momentum in the solar system:

The sun? Or the planets and asteroid belt?


With no calculations to back it up, I would have to assume the Sun. It's sheer mass, and the general understanding we have of solar formation points to the same conclusion.

It might be more interesting to consider which body has the most angular momentum, relative to it's mass. This would favor bodies that A) are more rapidly spinning B) have a larger amount of mass further from their center of rotation (possible less dense in general).

This might well go to fragments of high energy, nearly-head-on collisions, though.




Found a link:
http://www.zipcon.net/~swhite/docs/astr ... entum.html


The angular momentum of the solar system is the sum of the angular momenta of each of its mass points about the center of mass. It is an extensive quantity, a vector associated with the system, not any particular point.


See the wiki article on angular momentum or any standard text on classical mechanics such as Goldstein.

ruveyn


Assuming the Nebular Hypothesis, would the rotational momentum of the sun be greater than that of the planets'? Also, would it not include their momentum in their orbits and not merely their rotation about their axes?