We do not currently know and in fact we may never know. Due to the nature of the big bang, and the fact that all space, matter and energy are a direct result of it, there is no way to accurately detect anything outside of its scope. Everything we know about the universe comes from observing and analyzing the universe around us. Since the universe we know did not exist before the big bang there is nothing we can learn about the "before time" from observing the universe we live in. There may have been a universe before that which went into a "big crunch" which led to the big bang of our universe. It is natural to assume that if that were the case then that previous universe must have also had its origins in a big bang as well, and perhaps its all part of a huge cycle.
In fact, since the big bang is the origin of everything in our universe, including space itself, it may also be the origin of time itself, and so there may not have been a "before" the big bang.
But more to the point, in order for another big bang to occur, the universe would have to be compressed in a "big crunch" into a singularity before that could happen. There are some theories which point this direction, and there are some which do not.
Our sun is a medium sized star and has a mass of 2x 1030 Kg. Let's assume that this is the average mass.
The speed of light is 3x 108
e=mc2
Therefore the energy in joules, or watt seconds, to make the visible universe is in the order of 1x1024 x 2x1030x3x108 x3x108 = 18x 1070 joules
It is said by some physicists that visible matter account for only about 4% of the matter in the physical universe.
Therefore, the figure for energy now is multiplied by 25= 4.5x 1072 joules
(Some mathematicians might consider the smaller number 1065 to be infinity for all practical purposes)
If we divide the above figure by 5x 109 , this will result in the number of tonnes of TNT equivalent, which is roughly 1x 1063 Tonnes of TNT.
This figure is so large it is really above our comprehension.
If you now consider that some say that the universe was (kind of) made in 10-43 seconds, then the power required to unleash that sort of energy, from the formula
Power= energy divided by time, then the power required is 4.5 x 1072joules divided by 10-43 which is 4.5 x 10115watts
I dare anyone to now ask "where does that energy, or power, come from???
If you ask this of most people involved with the physical sciences, then you better be prepared to start calculating how many cats it takes to kill how many pigeons!
the total kinetic energy, 1044 joules (2.5 × 1028 megatons of high explosive), is about 100 times the total light output, making supernovae some of the highest-energy explosions in the universe.
The only chemical elements created at the beginning of our universe were hydrogen, helium and lithium, the three lightest atoms in the Periodic Table.
Carbon and oxygen were not created in the Big Bang, but rather much later in stars. All of the carbon and oxygen in all living things are made in the nuclear fusion reactors that we call stars. The early stars are massive and short-lived. They consume their hydrogen, helium and lithium and produce heavier elements. When these stars die with a bang they spread the elements of life, carbon and oxygen, throughout the universe.
Big Bang Theory
The Big Bang theory is an effort to explain what happened at the very beginning of our universe. Discoveries in astronomy and physics have shown beyond a reasonable doubt that our universe did in fact have a beginning. Prior to that moment there was nothing; during and after that moment there was something: our universe. The big bang theory is an effort to explain what happened during and after that moment.
So ill simple it down just a bit
So technically at the start of time there was no such thing as a planet no such thing as a star. Most things in space is made out of chemicals so there technically saying that the solar system had a reaction to some chemicals and it exploded into coloures and the SUN started to devolep with sun there's life and with life there's animals such as our selve's the dinosours for example, some say were hit by a asteroid but no one really knows
I hope i helped
Here's a link to help you understand
http://www.YouTube.com/watch?v=EUe_Vfi5IL0&feature=player_embedded#
Copy and paste it to understand properly
Georges Lemaitre did not "find out about" the Big Bang; he created the topic. His view that creation began with a primeval atom that exploded was much later coined by Fred Hoyle in the late 1940s as "the Big Bang." Since Lemaitre died in 1966, he was well-aware of the newly termed phrase.
well my mother has been off work for a couple of days so about 25 :)
In 1931, Lemaitre first proposed his hypothesis of the primeval atom which was later referred to as the "Big Bang".
It encompassed all of the matter and energy that exists today. So, VERY powerful.
Based on presently known evidence, we have no reason to think the Big Bang has occurred more than once.
Greece sits on the border of two tectonic plates, the Eurasian and the African plate. The Eurasian plate is sliding under the African plate at a rate of around 3cm per year, which results in earthquakes. Since 1900, there have been 7,352 earthquakes in Greece.
It is impossible to determine how many earthquakes there have been in the past century. Earthquakes occur frequently all over the earth, including deep under the ground. Many of these may not be felt by people and barely register on seismic equipment, but they are still earthquakes.
I can't really say in detail .....but it is most likely that its because there is a default in that area ....like in California ..there are several defaults there and thousands of earthquakes occur each day there. BECAUSE its a active earthquake zone." :D Earthquakes also occur in Alaska and also; off the coast of Mexico....
Data from the past 100 years suggests that the number of earthquakes per year arranged by magnitude is:Magnitude : Average Number Annually8 and higher:17 - 7 : 9 to 156 - 6.9 : 1345 - 5.9 : 13194 - 4.9 : 13,0003 - 3.9 : 130,0002 - 2.9 : 1,300,000The total number is therefore around 1, 500, 000 a year. Given that the Earth is about 4.5 billion years old and solid enough for earthquakes for about 4 billion of that number, the total number of earthquakes in the Earth's history would be about 6x1015 or 6,000 trillion.
too many to name
12
their has been 6 earthquakes
since when?
There have been only 2 "significant" earthquakes in San Diego since 1800. 1800 - 6.5 earthquake in San Diego 1986 - 5.3 earthquake in Oceanside There have been smaller earthquakes. In addition, residents of San Diego have been able to feel other earthquakes that were centered elsewhere.
Too many to count unless you specify a minimum Richter Magnitude!
many
Since 1870 there have been 7 recorded earthquakes in Erie PA, averaging 2.8 Richter (worst: 3.5). There have been three quakes were since 1990 (average 2.4 Richter). The greatest period without a quake was 56 years.
Since 1900, earthquakes have occurred in 39 U.S. states. Minor earthquakes, for instance, struck states such as Illinois and Nevada in 2008. There has not been a major quake on the U.S. mainland, however, since the 6.7 magnitude Northridge, California, event in January 1994.
364,0000000
Ireland does not get major earthquakes. Minor earthquakes can be felt in Ireland often. They are often centred under the Irish Sea or in England. The last was in early 2008.
20
Greece sits on the border of two tectonic plates, the Eurasian and the African plate. The Eurasian plate is sliding under the African plate at a rate of around 3cm per year, which results in earthquakes. Since 1900, there have been 7,352 earthquakes in Greece.