Big Bang Theory?

Question

What the Big Bang Theory About if You to explain in an assignment for Class

Answer 1

take the time to watch this video and blow their socks off
http://video.google.com/videoplay?docid=4183875433858020781&q=Parallel+Universes&total=1159&start=0&num=10&so=0&type=search&plindex=5
my fav

Answer 2

Once upon a time 13.7 billion years ago all the matter and energy in the entire universe was collected at a single point in something called the Cosmic Egg. We don’t know much about it or anything about the universe prior to its existence. The Cosmic Egg was unstable and exploded creating the universe; the big bang.

The universe has been expanding from that point ever since. The universe expanded at an uneven rate and gas pockets formed. Those gas pockets collected and formed stars and planets; as the universe aged the larger of those stars exploded in nova and supernova. Then the gas was spread out in the universe along with complex elements, before this point the universe didn’t have anything like radioactive elements or any elements more complex than iron. These new dust clouds once again collapsed and formed stars and planets and again they aged and the larger stars went nova and supernova starting the cycle all over again.

Meanwhile the universe is expanding at a constant rate. First determined by the famous Mule Skinner turned Astronomer E. Hubble (for which the space telescope was named). He calculated that the universe is accelerating at a known rate and so was able to calculate the age of the universe.

Newtonian Physics says that after the original explosion the elements of the universe should slow down, but for some reason the speed is increasing. No one knows why and to allow for this the theory of “Dark Energy” was created. If normal science can’t allow for the continued expansion of the universe then something else must be doing it.

Most of the universe about 3/4’s of it is missing; we have no idea where it is. So the theory of “Dark Matter” was created to account for this missing matter. If we can’t find it then it has to be some sort of non-radiating matter, something dark.

As the universe ages the stars age and die; the large stars explode in novas or supernovas the really huge stars collapse into black holes. The problem is that more and more smaller stars and the dead remnants of them (white dwarves) are left over. This means that the cycle of death and rebirth though novas and supernovas are limited. Furthermore as the universe continues to expand then there is less chance that the gas clouds will collect and form into new stars. Eventually the only thing left will be cooling white dwarves, a faint trace of gas and dust, and black holes. Without fuel the black holes will evaporate through Hawking Radiation leaving only chaos in its wake. This cooling and continued spread of the Universe is called the Heat Death of the Universe, and is our eventual end in many billions of billions of years from now.

Currently, our sun Sol is middle aged and only has about 4 billion years left before it expands into a red giant and then collapses into a white dwarf. It would take a star 4-5 times the size of Sol to go nova and one that is 20 times the size will collapse into a black hole. Before the sun dies our galaxy, the Milky Way, faces a collision with the Andromeda Galaxy some 3 billion years from now. Inside the cores of each galaxy is a super massive black hole, these are pretty common it seems at the center of a lot of galaxies. When the two super massive black holes come together our galaxy’s black hole will be sucked in (the Milky Way is smaller than the Andromeda Galaxy). The gravitational tides will throw the two galaxies into disarray creating a new larger galaxy. However, many planets and stars will die in the process. The chances of a physical collision is slim, but gravity will have its say and it will be powerful enough to rip solar systems apart.

The big bang theory directly contradicts the Creationist theory of the creation of our planet directly by god, by a factor of six thousand to 13 billion.

Answer 3

If you beleive in the theory of evolution, it is basically the creation of the universe from a object of singularity (which means non dimensional object of infinite mass). A huge bang as this singularity explodes and shoots out the matter that today is the material the universe is made of. Nebulae form from this random matter, and eventually form into a star when they generate a gravitational feild to pull it together, they form a sphere because its the smallest size an object can squeeze into when crushed. Planets made from bits of random particles such as dust start to rotate (orbit) the new stars and eventually form into planets (again spherical) in the same way the stars formed. This gives our universe as of today, with these processes (excluding the big bang) happening over and over again even now, however each star and planet forming takes hundreds and thousands of years. Our sun is 6 Billion years old now and is only halfway through its predicted life.

If you beleive in god creating all that is real, then the big bang was gods way of creating the universe, and then he arranged things the way he wanted, and created the stars and the planets instantly, at the same time as the big bang. Then customized each planet, as earth is now.

Some religeos beleifs even excude the big bang theory altogether, and say god just made everything with a click of his fingers.

Good Luck. Hope this helped.

Answer 4

In the 1920's, it was first noticed that there were galaxies *outside* of the Milkyway. In the 1930's, Edwin Hubble and others noticed that these galaxies seem to be flying apart at tremendous speeds - like "fragments of a bomb." That's what the coined the phrase, "The Big Bang."

Since all the galaxies seem to be flying apart from each other, then in the past, they must have all been very close together - and it's believed they were all part in one single point, that exploded and formed the universe.

It's not clear if there's enough mass in the universe to stop the galaxies from flying apart; if there is, then in many billions of years, there'll be a "big crunch" - when all the matter in the universe is drawn back together. If there's not, then they'll continue to fly apart - forever.

Answer 5

I could not even begin to answer this in satisfactory way that would be useful in an assigment, however have a look at these sites:
www.big-bang-theory.com
en.wikipedia.org/wiki/Big_Bang
map.gsfc.nasa.gov/m_uni/uni_101bb1.html

just to name a few