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Old 06-03-2003, 04:38 PM   #105 (permalink)
sngx1275
Loser
 
Location: Central Missouri
Me I believe in evolution.

But thats not the only part of this thread - the title wants universe history too. So here is what I can provide you.

History of Universe:
1. Initially-Minkowski Space -pre big bang
Mass = 0
Temp = 0k
Volume = 0 *Laws of Physics do not apply*
2. Big Bang - Universe Created
-First appearence of Expanding Energy -something higher energy than plasma
3.1 Second into Existance
- 1st appearence of mass
- Exponential Expansion Phase
- Broken Symmetry (slight variations in texture)
- Hotter and "cooler" regions begin to form
- 1st Heterogeneties
4. Partical Creation Phase
- 1st particles - antiparticles created
- Expanding Sphere continues
5. Partical Production Ceases - subatomic particles
- Particles and antiparticles mutually anialate each other
- Attraction due to electormagnetic properties
6. 14 seconds after Big Bang
- Subatomic particles begin to organize into protons & neutrons
- Then organize into the nuclei of H and He
- 80% Hydrogen 20% Helium
- Temperature = 3 Billion K
- H & He concentrated in Hotter Regions
7. Time = 300,000 Years
- Temperature 3000K
- Temperature is cool enough for electorns to attract to H and He nucleui - atoms formed
- "Proto"star formation in hot dense regions
8. Time 1 Billion years
- Accumulation of enough H-He to allow 1st stars to ignite
- Proto galaxies begin to form - corresponding vacuum of space

Thats the history of the universe for you. Kind of placed it in this post for fun. I'm bored and been drinking a bit yet its too early to go out just yet.

In case you are interested into where formation of earth comes into play I'll help you out. All you high school students take note maybe you can use this in one of the science classes you take

Estimates range for universe age most being between 13-20 billion years. Based on the "Red Shift" (Hubble I think discovered this). And by Cephid Stars (they pulse at a high rate and somehow they determine this I could explain the best I can but it would take too much time).

Our Solar system can be very precisely be estimated to be 4.6 billion years old. Oldest dated earth rock - 4.2 Billion. Now time for earth history:
1. At least 1 supernova explosion before matter in Earth can be formed (remember H and He were the only elements that existed at formation of universe... We have more than H and He right?)
2. Planetesimals form in our solar system (masses of matter)
3. Heavy elements settle to inside of planets (now I'm just goign to do earth now).
4. After 100,000 years our sun enters a T-Tauri stage where it expels 25% of its mass in a proton/electron plasma.
5. This explosion blows a good portion of the gases from the inner planets out to the gaseous planets.
6. Fairly long planetary accretion process of how elemental seggregation happened (that I will not get into-Smith and Ringwood models if you care to look them up)
7. Then sometime in accretion process when earth is still molten a big meteor hits it and displaces some of the matter, making up the moon. Trust me this is a logical model - I could provide you with elemental percentages of matter in earth and moon and compare it to smith and ringwood models and it would make sense.

Well I think this is my longest post ever by about 4 fold. Hopefully the people that cared enough to read this learned some. I find it pretty interesting.

If you are curious as to how I know this stuff, well I learned it from about the 3rd and 4th lectures in Geochemistry at my school. (I'm a geology major).
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