The Big Bang
Contents
- Cosmogony
- Singularity
- The Big Bang - 1 More singularity
- The Big Bang - 2 The early Universe is a 'soup' of heat and radiation.
- The Big Bang - 3 Is a scientific theory
- Background radiation Helps astronomers determine the age of the universe
- More on Dark energy i e from 3.20 on the “Talk” page here.
Today's journey includes the question:
How did the solar system come into being?
First, we now backtrack.
We'll come to singularity. Also the Time-X-Y representation.
So far, we see a grossly simplified original sky at night starting from a Big Bang c 14 billion years ago expanding.
Contents
1 Cosmogony
- In astronomy, cosmogony refers to the study of the origin of particular astrophysical objects or systems, and is most commonly used in reference to the origin of the universe, ....
- The prevalent cosmological model of the early development of the universe is the Big Bang theory. ...
- It is generally accepted that the universe began at a point of singularity, and when the singularity of the universe started to expand, the Big Bang occurred, which evidently began the universe.
- ... there is currently no theoretical model that explains the earliest moments of the universe's existence ...due to a lack of .. testable theory . . .
- The main disagreement among theories is whether time existed "before" the emergence of our universe.
- Under the top image this text is shown:
- The Big Bang theory, which states that the universe originally expanded from high or infinite density, is widely accepted by physicists.
However, the X Y Time model is disputable. The Time dimension is extra to the three dimensional Height, Width, Depth model and does not replace Height.
2 Singularity
The initial singularity was a ... seemingly infinite density thought to have contained all the mass . . of the Universe before causing it to rapidly expand in the Big Bang ... , creating the present-day Universe.
3 The Big Bang - 1
.
3 The Big Bang - 1
- According to the Big Bang Theory, ‘everything in existence is thought to have occupied a single infinitely dense point’ called the singularity.
- ‘'Only after this point began to expand in a “Big Bang” did the universe officially begin’, which gives the universe an age of 13.8 billion years.
- The problem with this theory is that it cannot explain what happened before, or during, the singularity. ...
- In the beginning, everything in existence is thought to have occupied a single infinitely dense point, or singularity. Only after this point began to expand in a “Big Bang” did the universe officially begin.
4 The Big Bang - 2
a b c d e f g
BB soup first atoms first stars first large galaxies Universe expands Sun etc form
a
The Big Bang - 13.8 billion years ago. Let's say this is the average.
b
The early Universe is a 'soup' of heat and radiation.
c
The Dark Ages: the first atoms form...
d
.. about 200 million years after a, the first stars form.
e
First large galaxies form around 1 billion years after a.
f
..expansion of Universe starts to rapidly accelerate ....
g
.. about nine billion years after a, our solar system and sun forms. Leftover material collects to form solar planets including Earth.
Planetarium: curated by Chris Wormell and Raman Prinja. 2018,
Big Picture Press. here p 87
5 The Big Bang - 3
- is a scientific theory about how the universe started, and then made the stars and galaxies we see today.
- The Big Bang is the name that scientists use for the most common theory of the universe, from the very early stages to the present day.
- The universe began as a very hot, small and dense superforce .... with no stars, atoms, form or structure .. .
- Then about 13.8 billion years ago, space expanded very quickly (thus the name "Big Bang").
- This started the formation of atoms, which eventually led to the formation of stars and galaxies.
- It was Georges Lemaître who first noted (in 1927) that an expanding universe could be traced back in time to an originating single point.
- The universe is still expanding today and is also getting colder.
6 Background radiation
A 2013 map of the background radiation left over from the Big Bang*, taken
by the ESA's Planck spacecraft, captured the oldest light in the universe.
This information helps astronomers determine the age of the universe.
6.2
Planck was a space observatory operated by the .. ESA from 2009 to 2013, which mapped ... the cosmic microwave background (CMB) at microwave and infra-red frequencies..
What is meant by radiation in physics?
The emission and development of energy in the form of rays or waves.
7 Dark energy
What Is Dark Energy?
More is unknown than is known.
- We know how much dark energy there is because we know how it affects the universe's expansion.
- Other than that, it is a complete mystery.
- But it is an important mystery. It turns out that roughly 68% of the universe is dark energy.
- Dark matter makes up about 27%.
- The rest - everything on Earth, everything ever observed with all of our instruments, all normal matter - adds up to less than 5% of the universe.
source with diagram
For those who need images of the big bang this is a link.
Hope you enjoyed them. Films, DVDs etc are full of such representations.
Meaningless.
The sound effects are equally meaningless. Sound does not travel in a vacuum. more