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Jan 2 2009 06:04am
I know it happend, i was there...
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Jan 2 2009 10:41pm
science is jus a description
n the theory is well, jus a theory with logical explanation
an educated guess
theres no chemistry involved

This post was edited by Gthumb420 on Jan 2 2009 10:42pm
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Jan 3 2009 11:53pm
Quote (njaguar @ Wed, Dec 10 2008, 07:13pm)
My problem with the Big Bang theory is that it does not account for how a contraction of the universe will occur. Our universe is constantly expanding, and there is nothing known yet that will cause it to start back into a collapse cycle.


that is true and if space is endless then we are not bout to go together again, but maybe somewhere out there another universe is moving closer, we just dont know it. There is the collection, maybe one has a domonent gravitational pull, bang.
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Jan 6 2009 01:04am
It was proven was it not?
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Jan 6 2009 01:50pm
no
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Jan 6 2009 03:10pm
My question is, if density has no correlation with gravitation, only mass, and the average black hole is roughly 10 times the mass of our sun(smaller than many other stars) then, why is there such an comparatively stronger gravitational pull coming from black holes than a star of the same mass? I should mention, Astronomy is not my strong suit and I apologize if this is a stupid question.

This post was edited by rfbfire on Jan 6 2009 03:16pm
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Jan 6 2009 04:32pm
Quote (rfbfire @ Tue, Jan 6 2009, 04:10pm)
My question is, if density has no correlation with gravitation, only mass, and the average black hole is roughly 10 times the mass of our sun(smaller than many other stars) then, why is there such an comparatively stronger gravitational pull coming from black holes than a star of the same mass? I should mention, Astronomy is not my strong suit and I apologize if this is a stupid question.


The gravitational force isn't any stronger than from a regular star, for instance if sun was replaced with a black hole of the same mass, the planetar motion would not change. It's only different when you are inside the event horizon(around 4km for the smallest black hole)
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Jan 6 2009 08:17pm
Quote (rfbfire @ Tue, Jan 6 2009, 01:10pm)
My question is, if density has no correlation with gravitation, only mass, and the average black hole is roughly 10 times the mass of our sun(smaller than many other stars) then, why is there such an comparatively stronger gravitational pull coming from black holes than a star of the same mass? I should mention, Astronomy is not my strong suit and I apologize if this is a stupid question.


to add what bes said, black holes are only infinitely stronger when you are very close to them because the radius shrinks by enormous scales. an event horizon (which is the edge of the infinite gravitationl pull) is very close to the black hole so according to the equation of Gconstant*M1*M2/r, where r is the distance between the two oibjects, one can see why a black hole of enormous mass would have an enormous pull when youre close. since ALL of the mass is packed into a tiny spot, ALL the gravity of felt from that mass. whereas a star (4 km from the center [where the event horizon WOULD be]) has mass all around it, so the net force acting on that spot is not at all as strong.
this help?
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Jan 6 2009 08:43pm

With a black hole r (will theoretically approach 0) gets really really small and it has a very big mass, working out that math and you get a really really strong gravitational pull.
When you are further away the density has less effect.
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Jan 10 2009 01:51am
Quote (Spira @ Wed, Dec 10 2008, 07:10pm)
The Big Bang is the cosmological model of the universe that is best supported by all lines of scientific evidence and observation. As used by cosmologists, the term Big Bang generally refers to the idea that the universe has expanded from a primordial hot and dense initial condition at some finite time in the past, and continues to expand to this day. - wiki

I know they're running tests to try to recreate a smaller version of the big bang,
if they do, would this disprove several major religions?

If we in fact, recreated the big bang, would this disprove god?

Do you believe the big bang theory actually happened? I kinda want to see which direction this sways.


Big Bang theory = false.

Many parts of the theory have been proven false already wink.gif
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