RE: Infinite number of planets with life
June 6, 2012 at 8:11 pm
(This post was last modified: June 6, 2012 at 8:42 pm by Anomalocaris.)
If you don't proceed from what we know, then you might as make up any shit you want.
The universe have a start because we can see it's developmental trend now, and using our understanding of physics, we can trace the development trend back in time to 13.7 billions ago. We can also observe direct evidence Of what happened 13.7 billion years ago. They agree. Before 13.7 billion years ago the universe was clearly so fundamentally different from what it is now that all of what we now coloquially take to be the symbols of the universe, planets, stars, galaxies, etc, can't exist. Most of the very elements of your body, carbon, iron, calcium, can't exist. Chemistry can't exist. Indeed prior to some point around 13.7 billion years ago Light can not propagate through space because the universe was opaque. As we see farther out we see farther back due to time taken by light to travel. When we look out 13.7 billion light years we look back 13.7 billion years. There we in fact see the very last second of the opaque universe as it turns translucent. This ghost image of opaque universe is called the cosmic background radiation. Look it up. So whatever came before was so different from our universe, we might as well say our universe started after that point.
Btw, you should know what the term gas means before asking whether gas came before Universe. Gas in science has a very specific meaning. If you don't know precisely what is meant by gas, what meaning could it have for you if you were told whether gas came before he universe?
What scientists call gas can not exist before 13.7 billion years ago. A small amount of time prior to that even atomic nucleus can not exist and the universe was an opaque soup of subatomic particles. Much beyond that we reach temperatures and densities that is as yet beyond the capacity of modern physics to accurately model. So the truth is we are not certain what came much before the beginning of the universe as we know it.
The universe have a start because we can see it's developmental trend now, and using our understanding of physics, we can trace the development trend back in time to 13.7 billions ago. We can also observe direct evidence Of what happened 13.7 billion years ago. They agree. Before 13.7 billion years ago the universe was clearly so fundamentally different from what it is now that all of what we now coloquially take to be the symbols of the universe, planets, stars, galaxies, etc, can't exist. Most of the very elements of your body, carbon, iron, calcium, can't exist. Chemistry can't exist. Indeed prior to some point around 13.7 billion years ago Light can not propagate through space because the universe was opaque. As we see farther out we see farther back due to time taken by light to travel. When we look out 13.7 billion light years we look back 13.7 billion years. There we in fact see the very last second of the opaque universe as it turns translucent. This ghost image of opaque universe is called the cosmic background radiation. Look it up. So whatever came before was so different from our universe, we might as well say our universe started after that point.
Btw, you should know what the term gas means before asking whether gas came before Universe. Gas in science has a very specific meaning. If you don't know precisely what is meant by gas, what meaning could it have for you if you were told whether gas came before he universe?
What scientists call gas can not exist before 13.7 billion years ago. A small amount of time prior to that even atomic nucleus can not exist and the universe was an opaque soup of subatomic particles. Much beyond that we reach temperatures and densities that is as yet beyond the capacity of modern physics to accurately model. So the truth is we are not certain what came much before the beginning of the universe as we know it.
