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Old 02-15-2015, 10:59 AM
 
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Originally Posted by tnff View Post
Well, it is falling. Around the sun. Which is also falling. Around the galaxy which is also falling. Around a universe ... Ponder on that a while.
Solar systems and galaxies are dominated by gravity, the Universe at least in theory is dominated by dark energy which is causing a rapid and accelerating expansion. Whatever the case it's expanding, not collapsing.
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Old 02-15-2015, 01:27 PM
 
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I would rather think our universe is vibrating ( I mean expansion and contraction).
Expansion due to the acceleration caused big the BIG BANG in the infinitesimally small time interval just after the explosion. The law of conservation of momentum applies here.
And contraction due to what ? No idea right now!
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Old 02-15-2015, 01:34 PM
 
Location: Old Hippie Heaven
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Originally Posted by ThePage View Post
I would rather think our universe is vibrating ( I mean expansion and contraction).
Expansion due to the acceleration caused big the BIG BANG in the infinitesimally small time interval just after the explosion. The law of conservation of momentum applies here.
And contraction due to what ? No idea right now ,but I might get it one day maybe!
Or, instead of wandering around in your own head, you could read a real book, where, say, an astrophysicist talks about current thinking. Tyson comes to mind, but there are others who have written accessible books.

All the evidence says that it is expanding. Is there are a limit to that expansion? Will the universe fall back into a singularity? That's less clear.
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Old 02-15-2015, 02:37 PM
 
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Originally Posted by jacqueg View Post
Or, instead of wandering around in your own head, you could read a real book, where, say, an astrophysicist talks about current thinking. Tyson comes to mind, but there are others who have written accessible books.

All the evidence says that it is expanding. Is there are a limit to that expansion? Will the universe fall back into a singularity? That's less clear.
Read somewhere that the Universe would one day go back to the initial point.
Don't remember anymore where.
Also all evidence was also saying Light was a wave until someone found out it bends itself around corners.

As for astrophysics I prefer quantum physics due to the openness it provides.

Love the quote "anything that is not impossible exists".

Thumb up for Neil, Heisenberg and Schrodinger

Read more @ QUANTUM PHYSICS: THE PHYSICS OF DREAMING
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Old 02-17-2015, 09:36 PM
 
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It seems there was no Big Bang and there is no dark stuff
Reading No Big Bang? Quantum equation predicts universe has no beginning
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