Shorts points about the big bang
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10 Facts about 'Big Bang'
1. Astronomer Sir Fred Hoyle coined the phrase ‘The Big Bang’
The astronomer Fred Hoyle.
The first time that the name of the Big Bang theory was heard in public was in March 1949 on the BBC’s Third Programme. The following year, Hoyle delivered a series of lectures which were reported in the ‘Listener’ magazine, which was the first time the phrase had been seen in print. Holye was a supporter of the Steady State theory.
2. A Belgian priest was the first to pull together the idea of the Big Bang theory
George Lemaitre, originator of the big bang theory.
Various scientists had arrived at solutions to Einstein’s theory of relativity which predicted an expanding universe but it is Catholic priest Georges Lemaître who is credited with coming up with the bones of the Big Bang theory. His work was not widely publicised at the time leaving Edwin Hubble to take the glory a few years later.
3. The discovery of the Cosmic Microwave Background provided observational evidence for the Big Bang
Discovery of the cosmic microwave background radiation.
If our universe began with a Big Bang, it would have been incredibly hot. Calculations show that at the present time it would have cooled to about three degrees above absolute zero leaving a weak background radiation. This was discovered in 1965 by Penzias and Wilson. Most cosmologists abandoned the Steady State theory at this point in favour of the Big Bang.
4. The spacecraft COBE discovered small variations in the background radiation
COBE spacecraft.
One of the key points of the theory was that the background radiation would not be uniform. From Earth, it appeared to be the same everywhere, but in 1990 a spacecraft named Cosmic Background Explorer (COBE) was launched and took measurements that were precise enough to confirm there were irregularities.
5. The spacecraft WMAP determined the age of the Universe to be 13.7 billion years
WMAP_spacecraft_diagram
Various predictions and calculations showed the Universe to be around 14.5 billion years old. Very precise imaging of the background radiation was used to obtain the more accurate figure of 13.7 billion years.
6. We cannot know what came before the Big Bang
Space, time and the universe.
Space and time came into existence at the same moment so there was no ‘before the Big Bang’
7. Standard Big Bang theory did not work very well for the very early universe
Standard big bang theory.
Using the standard Big Bang theory works well until you go back to 10-36 seconds after the Big Bang. In the 1980s, physicists Alan Guth and Andrei Linde developed the Inflationary Theory which took us back further and explains the irregularities in the background radiation.
8. Planck Time is 10-43 seconds after the Big Bang
Inflationary theory of the universe.
It is believed that all the forces of the universe (gravity, strong nuclear, weak nuclear and electromagnetic) were combined into a single force prior to this moment in time. At the Planck Time, gravity is thought to have separated from the other forces.
9. Inflationary theory tells us that the universe expanded rapidly
Between 10-36 seconds to 10-32 seconds after the Big Bang, the universe briefly expanded at many times the speed of light. Expansion has been much slower since. It also explains the observed ratio of hydrogen to helium.
10. The fundamental particles formed in the first 3 minutes after the Big Bang
The first particles to form were the quarks and as the universe expanded and cooled, they joined together to make protons, neutrons and other particles.
Answer:
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Explanation:
Our whole universe was in a hot, dense state
Then nearly fourteen billion years ago expansion started, wait
The earth began to cool, the autotrophs began to drool
Neanderthals developed tools
We built a wall (we built the pyramids)
Math, science, history, unraveling the mysteries
That all started with the big bang! Hey!
Since the dawn of man is really not that long
As every galaxy was formed in less time than it takes to sing this song
A fraction of a second and the elements were made
The bipeds stood up straight, the dinosaurs all met their fate
They tried to leap but they were late
And they all died (they froze their asses off)
The oceans and Pangea, see ya wouldn't wanna be ya
Set in motion by the same big bang!
It all started with the big bang!