Our Universe once again

[spacekud]

Since we don't know alot about the universe.<br />Lets use the BB theory for this if the Big bang happened and the universe is expanding, will it finally collapse in on itself? If so does it repeat the process over and over? Since we really don't know what happened before the universe came to be its just something that popped in my head.

 

[enigma10]

Who says we dont know alot about the universe?<br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />We may just not know enough.<img src="/images/icons/wink.gif" /><br /><br />http://en.wikipedia.org/wiki/Big_Bang<br /><br />http://www.big-bang-theory.com/<br /><br />http://map.gsfc.nasa.gov/m_uni/uni_101bb1.html<br /><br />http://www.allaboutscience.org/big-bang-theory-video.htm<br /><br />http://www.youtube.com/watch?v=ShJwq3aPLMk<br /><br />http://www.youtube.com/watch?v=xxQR6gdd1P0<br /><br />and..<br /><br />http://www.youtube.com/watch?v=494HNSbRWyw<br /><br /><br /> Whoops! Wrong Bang! <img src="/images/icons/wink.gif" /> <div class="Discussion_UserSignature"> <em>"<font color="#333399">An organism at war with itself is a doomed organism." - Carl Sagan</font></em> </div>

 

[spacekud]

okay let me reprase. Everything, our findings and such are just mere needle pricks of whats really out there.

 

[enigma10]

<i><font color="yellow">mere needle pricks </font></i><br /><br />i dont know about it all being mere skinny jerks, but i'd like to think we know more than we think, less than we should and never less than yesterday.<img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> <em>"<font color="#333399">An organism at war with itself is a doomed organism." - Carl Sagan</font></em> </div>

 

[spacekud]

Okay if we know more then we think, how do we know anything at all how can we tell what is right and what is wrong in the questions we ask ourselves about this place we call home. Maybe we need to start thinking a little harder.

 

[enigma10]

If we think we know then we know "anything at all". Right and wrong are moralistic values that dont play into scientific facts and we should always try to be thinking harder, though thinking smarter was always a desired goal.<br /><br /> Now. What was your original question?<img src="/images/icons/wink.gif" /> <div class="Discussion_UserSignature"> <em>"<font color="#333399">An organism at war with itself is a doomed organism." - Carl Sagan</font></em> </div>

 

[spacekud]

LOL!, original question... does or does not the universe collapse and expand continuously? I mean the idea of it. Universe has a Big Bang expands until it finally implodes repeats process maybe.

 

[5billionyearslater]

You mean the Big Bang followed by the Big Crunch and so on until the end of time........ha! end of time - certainly puts a new meaning on it!<br /><br />Current theory is that the Big Crunch is highly unlikely and that the universe will expand for ever.<br /><br />If there was a Big Crunch it would still leave a tiny bit of Radiation behind and none has been found. And no the CMBR is not the radiation we're talking about.<br /><br />I think many people like the Big Crunch theory, I know I certainly would hope it would be true but it just doesn't seem likely, in fact all the supported evidence points that the universe will expand for ever.

 

[spacekud]

If you say it like that, then how does time really end, when time is all the time.

 

[weeman]

If the big bang/big crunch scenario is true, then time may not have a beginning or end if the cycle is infinite. <br /><br />Our present day calculations show that we live in either an open universe or a flat universe. If we lived in a closed universe, then all matter in the universe would halt its expansion and it would collapse in on itself. <br /><br />It depends a lot on the discoveries of dark matter. From the visible baryonic matter that we can see in the universe right now, there isn't enough mass to bring the expansion of the universe to a halt. However, if we make future discoveries in dark matter, and we can actually calculate the total mass of all baryonic and non-baryonic matter, then we might discover that the universe could indeed come to a big crunch. <div class="Discussion_UserSignature"> <p> </p><p><strong><font color="#ff0000">Techies: We do it in the dark. </font></strong></p><p><font color="#0000ff"><strong>"Put your hand on a stove for a minute and it seems like an hour. Sit with that special girl for an hour and it seems like a minute. That's relativity.</strong><strong>" -Albert Einstein </strong></font></p> </div>

 

[5billionyearslater]

the "end of time" line was meant to be tongue-in-cheek!! <img src="/images/icons/wink.gif" />

 

[derekmcd]

Keep in mind, though, these calculations are based on the observable universe only. What's beyond the visible horizon may never be known. Scientists base their conclusions in the hopes that the averages maintain throughout the entire universe. <div class="Discussion_UserSignature"> <div> </div><br /><div><span style="color:#0000ff" class="Apple-style-span">"If something's hard to do, then it's not worth doing." - Homer Simpson</span></div> </div>

 

[owenander]

where did the matter come from in the universe

 

[MeteorWayne]

M=E/c^2 <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[spacekud]

Isn't it kinda weird how everything is perfect for life, our existence I mean, and how we came to be everything seems to be perfect, too perfect actually we got everything we need to survive like it was intended to be like someone planned it, I know thats gonna become a religious sort of thing right there but scientifically it does seem that everything is in perfect order like a plan. Sorry I was watching Theory of Relativity Video

 

[kyle_baron]

<font color="yellow"><br />Isn't it kinda weird how everything is perfect for life, our existence I mean, and how we came to be everything seems to be perfect, too perfect actually we got everything we need to survive like it was intended to be like someone planned it</font><br /><br />Yep, you just stated the obvious. Unfortunatly, not everyone can see the obvious. <img src="/images/icons/wink.gif" /> <div class="Discussion_UserSignature"> <p><font size="4"><strong></strong></font></p> </div>

 

[MeteorWayne]

However, if the conditions weren't that way, we wouldn't exist, so the question would be moot.<br /><br />It is the old Chicken or Egg conundrum <img src="/images/icons/wink.gif" /> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[spacekud]

I did not mean to make it sound like that lol, I just wanted to get others opinions on the whole thing.<br />Exactly one little mishap we would of never been I just find it weird. I'm sorry.

 

[pocket_rocket]

"Exactly one little mishap we would of never been I just find it weird."<br />Or maybe we would still exist but in a completely different way.<br /> <br /><br />

 

[qso1]

SpaceKud:<br />Isn't it kinda weird how everything is perfect for life,<br /><br />Me;<br />Actually, its not as perfect as it seems. Perfection IMO is a human concept about ideals. Earth is the only place in this Universe we know of so far that supports life. How long has earth done this is open to question. Will earth continue to be able to support life? And Earth is no paradise. There are plenty of places inhospitable to human life though humans can exist in such places for a short time such as deserts...arctic regions, high altitude mountain tops. Plenty of real estate out there which is fit for many lower forms of life but barely survivable for humans.<br /><br />If you really think about it, earth being 71% water...water we humans need, yet we cannot live in or we'd drown. Land...Antartica is an entire continent that remains populated by mainly researchers who brave the harsh environment for science but live in shelters. A small, perhaps 20%, being generous, of the earth is hospitable to humans.<br /><br />Add to that, AFAWK, humans have only been around for a very small percentage of the earths total existence so far at the intelligence level we have been at since humans began to utilize agricultural techniques.<br /><br />The Universe itself seems to be a tremendous waste of space from a purely perfection and efficiency standpoint. Planets and stars separated by lightyears and millions of miles of basically nothing. Orbits are not perfect...lots of chaos, and order to the Universe which only serves to leave open the question of a creator IMO. <div class="Discussion_UserSignature"> <p><strong>My borrowed quote for the time being:</strong></p><p><em>There are three kinds of people in life. Those who make it happen, those who watch it happen...and those who do not know what happened.</em></p> </div>

 

[kyle_baron]

<font color="yellow"><br /> Earth is no paradise. There are plenty of places inhospitable to human life though humans can exist in such places for a short time such as deserts...arctic regions, high altitude mountain tops. Plenty of real estate out there which is fit for many lower forms of life but barely survivable for humans. </font><br /><br />Yeah, but at least there is air to breath in those places. And we want to eventually live on the moon or Mars? LOL! <img src="/images/icons/wink.gif" /><br /><font color="yellow"><br />If you really think about it, earth being 71% water...water we humans need, yet we cannot live in or we'd drown.</font><br /><br />Yeah, but there is air above the water. And there is no reason that people can't live below the water for extended periods of time. I'm thinking of our nuclear submarines that can go for a year or so without surfacing.<br /><font color="yellow"><br />The Universe itself seems to be a tremendous waste of space from a purely perfection and efficiency standpoint. Planets and stars separated by lightyears and millions of miles of basically nothing. Orbits are not perfect...lots of chaos, and order to the Universe which only serves to leave open the question of a creator IMO. </font><br /><br />And as God, tell me exactly how you would have designed the Universe, using the existing laws (or your own laws, which you'd have to explain). Please tell me, I really want to know. <img src="/images/icons/wink.gif" /><br /><br /> <div class="Discussion_UserSignature"> <p><font size="4"><strong></strong></font></p> </div>

 

[spacekud]

I'm not saying everything is perfect, but just for general look at it everything seems to be perfect for life on this planet there are the goods and bads.<br />We need chaos to have order

 

[5billionyearslater]

The answer may be found in the Strong Anthropic Principle - <br /><br />"Why is the universe the way we see it? Because if it had have been different, we would not be here!" Taken from Steven Hawking's 'A Brief History of Time'.

 

[5billionyearslater]

"We need chaos to have order"....<br /><br />Well, do some research on the Four Chaos Attractors and you might find it's the other way around.

 

[kelvinzero]

But isnt it amazingly lucky that we find ourselves on the 29 percent of the world that is dry instead of the 71 percent where we drown <img src="/images/icons/wink.gif" /><br /><br />Hmmm.. If I was god I think I would specify a universe where life is not a zero sum game. That is just perverse. One example of this could be the universe invented in Greg Egan's Permutation City.