Thanks decimon.
"Don't even think about it."
Posted on 01/06/2009 5:02:55 PM PST by decimon
>>>>>>>> what if there is not enough mass to collapse the universe back on itself?(as it looks like) What causes the contraction of the universe? <<<<<<<<<<
I think that is still one of the open questions.
The current line is that there is not enough mass and the universe is expanding and accelerating in its expansion.
But then we have the mysterious dark matter and dark energy.
>>>>>> Only about 4% of the total energy density in the universe (as inferred from gravitational effects) can be seen directly. About 22% is thought to be composed of dark matter. The remaining 74% is thought to consist of dark energy, an even stranger component, distributed diffusely in space <<<<<<<
Give them time and perhaps the accounting will reverse itself.
There is a recent article claiming that the Milky Way galaxy is much bigger than previously supposed.
That’s taking in consideration that dark energy is massless. I’ve never weighed in on that yet.... bad pun yes.
Will we be around long enough to figure out if dark energy is a constant or not. We’ve only been measuring red shift rates for a historically small amount of time.
Plus dark energy is still specualted to be acted on by forces of gravity so in the end it can not “get rid of contraction”.
bump
Thanks... cool picture.
Friend of yours? *PING*
There would be no atoms in the singularity (as we know them), we don’t know if there is a critical mass for a singularity if you mean by critical mass an amount of matter and energy that causes an explosion, if there is a “critical mass” then why would it always equal all matter and energy in all of space time (why wouldn’t there be pockets outside of the singularity when that mass was reached and if there are these pockets . . . where are they?). Etc. When the steady state universe idea was exploded by the big bang theory, pun intended, theology once again gained the upper hand over science in cosmology, the public perception just hasn’t fully kept up to date on the point.
Thanks decimon.
"Don't even think about it."
thanks, bfl
I’ve always looked at Galaxies and thought “Hmmm...just like the water in the toilet bowl.” Something powerful sucking them in, like a black hole.
I was amazed when I heard that scientists didn’t all have the same opinion.
I am glad that are starting to see it my way ;)
Did Dark Matter Power Early Stars?
Universe Today | 1/02/09 | Nancy Atkinson
Posted on 01/02/2009 11:46:33 PM PST by LibWhacker
http://www.freerepublic.com/focus/f-chat/2158000/posts
What if Black Holes Didn’t Exist?
Seed Magazine | 7/21/06 | Richard Morgan
Posted on 07/23/2006 1:05:35 PM PDT by LibWhacker
http://www.freerepublic.com/focus/f-news/1670938/posts
Three cosmic enigmas, one audacious answer [bye-bye to black holes?]
New Scientist | March 9, 2006 | Zeeya Merali
Posted on 03/09/2006 8:34:42 PM PST by snarks_when_bored
http://www.freerepublic.com/focus/f-news/1593627/posts
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