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The three possible types of expanding universes are called open, flat, and closed universes. If the universe were open, it would expand forever. If the universe were flat, it would also expand forever, but the expansion rate would slow to zero after an infinite amount of time. If the universe were closed, it would eventually stop expanding and recollapse on itself, possibly leading to another big bang. In all three cases, the expansion slows, and the force that causes the slowing is gravity
The shape of the universe is determined by a struggle between the momentum of expansion and the pull of gravity. The rate of expansion is expressed by the Hubble Constant, Ho, while the strength of gravity depends on the density and pressure of the matter in the universe. If the pressure of the matter is low, as is the case with most forms of matter we know of, then the fate of the universe is governed by the density. If the density of the universe is less than the "critical density" which is proportional to the square of the Hubble constant, then the universe will expand forever. If the density of the universe is greater than the "critical density", then gravity will eventually win and the universe will collapse back on itself, the so called "Big Crunch". However, the results of the WMAP mission and observations of distant supernova have suggested that the expansion of the universe is actually accelerating which implies the existence of a form of matter with a strong negative pressure, such as the cosmological constant. This strange form of matter is also sometimes referred to as the "dark energy". If dark energy in fact plays a significant role in the evolution of the universe, then in all likelihood the universe will continue to expand forever.
This was one of my favorite threads. The complexity in nature is too complex to be acted upon by an intelligence. It's still as absurd today, as it was then.
originally posted by: madnessinmysoul
This is going to be quick and it's going to be mainly based in pictures...if you need further explanation, I bemoan the education system.
Naturally occurring:
[atsimg]http://files.abovetopsecret.com/images/member/c6b7165184ba.jpg[/atsimg]
Designed:
[atsimg]http://files.abovetopsecret.com/images/member/4f85d4088ad7.jpg[/atsimg]
Naturally occurring:
[atsimg]http://files.abovetopsecret.com/images/member/55fc796552a0.jpg[/atsimg]
Designed
[atsimg]http://files.abovetopsecret.com/images/member/bd425040e194.jpg[/atsimg]
Notice how all of the designed things there are simple and purpose built? Notice how all of the naturally occurring things are all complex and relatively unrefined? This is why the argument from complexity is downright stupid, as sometimes simplicity can be an indicator that something has been acted upon by an intelligent force.