Can someone briefly explain what the big bang theory is and the process? I hjave a sound understandning of it and i'm quite curious. Thanks
Here are several great articles on the big bang theory.
http://big-bang-theory.com/
http://map.gsfc.nasa.gov/universe/bb_theory.html
http://www.umich.edu/~gs265/bigbang.htm
Thanks :)
You're welcome.
I don't have the knowledge to comment on your content. The only thing I'd change though, is your use of the word "singularity." Omit it and the parentheses following it.
You love grammar, don't you Ms SUE?
Certainly! The Big Bang theory is the prevailing scientific explanation for the origin of the universe. According to this theory, the universe began as a singularity, a point of infinite density, about 13.8 billion years ago. Here is a breakdown of the process:
1. Singularity: The universe existed as an incredibly hot and dense point called a singularity. This point contained all the matter and energy that would eventually form the universe.
2. Expansion: The singularity rapidly expanded, resulting in the formation of space, time, matter, and energy. This phenomenon is often described as the "expansion of the universe."
3. Cosmic Inflation: Shortly after the initial expansion, the universe underwent a period of extremely rapid expansion, known as cosmic inflation. This rapid expansion is believed to have smoothed out irregularities and laid the foundations for the structure of the universe that we observe today.
4. Particle Formation: As the universe cooled down, particles such as protons, neutrons, and electrons were formed. These particles later combined to form atoms.
5. Formation of Matter: Around 380,000 years after the Big Bang, the universe cooled enough for atoms to combine and form matter. This is known as the "recombination era." At this point, light was able to travel freely through space.
6. Cosmic Microwave Background (CMB): The light that was released during the recombination era is still observable today as the Cosmic Microwave Background radiation. This radiation provides crucial evidence supporting the Big Bang theory.
7. Formation of Galaxies: Over time, matter further clumped together due to gravity, forming galaxies, stars, and other celestial objects.
It's important to note that the Big Bang theory is based on extensive observations, such as the cosmic microwave background radiation and the observed expansion of the universe. Scientists have gathered evidence from various fields, including astronomy, physics, and cosmology, to support this explanation for the origin of the universe.
So is this right? PS I tried putting some of it in my own words.
The Big Bang Theory occurred 14 billion years ago from a singularity (a single point, smaller than a pinhead with infinite temperature and density).
It is believed that everything (time, matter, space, stars etc) was created after the 'Big Bang' and was 'packed' at one tiny point.
In a fraction of a second, the Universe grew from smaller than a single atom to bigger than a galaxy. And it kept on growing at a fantastic rate. It is still expanding today.
As the Universe expanded and cooled, energy changed into particles of matter and antimatter. These two opposite types of particles largely destroyed each other. But some matter survived. More stable particles called protons and neutrons started to form when the Universe was one second old.
Over the next three minutes, the temperature dropped below 1 billion degrees Celsius. It was now cool enough for the protons and neutrons to come together, forming hydrogen and helium nuclei.
After 300 000 years, the Universe had cooled to about 3000 degrees. Atomic nuclei could finally capture electrons to form atoms. The Universe filled with clouds of hydrogen and helium gas.