0 seconds to 3 minutes
During the Big Bang event some of the energy was converted into this.
What is matter?
From three seconds to 380,000 years the universe is continuing to expand. As a result of the expansion these three factors changed dramatically.
What are density, volume (size) and temperature?
From 380,000 to 200,000,000 years ago the universe continued to expand, cool, and get less dense. There were huge clouds of hydrogen gas with a little bit of helium throughout the universe. This force brought the clouds of mostly hydrogen gas together.
What is gravity?
About 9 billion years ago this event was happening within the universe. Hint: you live in it and it has a supermassive black hole in the center.
What is the formation of the milky way?
The temperature in the universe is this compared to the earlier universe.
What is colder?
Three of the conditions within the early universe were...
What is hot, dense, small, expanding, murky, and violent?
The temperature of the universe from 3 minutes to 380,000 years ago did this.
What is decrease?
When gravity brought these huge clouds of mostly hydrogen together they started to heat up. At about 200 million years these started to light up throughout the universe.
What are the first stars?
9 billion years ago the universe was still getting bigger and bigger. As a result of this growth the temperature was doing this.
What is getting colder and colder?
The universe is expanding at this rate compared to the earlier universe.
What is greater?
This was the first force to emerge after the Big Bang. Careful, you might trip and fall because of this force.
What is gravity?
The volume of the universe from 3 minutes to 380,000 years did this.
What is increase?
Star did not form everywhere in the universe. Gravity acted upon the the clouds of mostly hydrogen to form webs of gas that were ready to form into stars. Between these webs were massive voids that were mostly this.
What is empty space?
After 9 billion years this star formed.
What is the sun?
Matter was forming, but we wouldn't call it elements yet. These are the subatomic particles that did form though.
What are protons, neutrons and electrons?
The density of the universe from 3 minutes to 380,000 years did this.
What is decrease?
The universe was continuing to expand due to this unexplained type of energy.
What is dark energy?
After 9 billion years this star system formed with the Milky Way Galaxy.
What is the Solar System?
As the universe ages distant galaxies will be moving away from the Milky Way very fast and cause a large this, which means the light is stretched as it moves from the source of the light to our galaxy. Think of a siren.
What is redshift?
During the first second of the big bang there was a war between two types of stuff. One of them, matter, eventually won. The other was...
What is antimatter?
When the universe was approximately 380,000 years old a bright light was emitted throughout the entire universe. This light today is seen as the Cosmic Microwave Background Radiation. This was caused by electrons attaching to the protons and neutrons in nuclei and formed the first elements. Two of these first elements were...
What is hydrogen and helium?
Hubble's law states that as you look at galaxies that are further and further away, their recessional velocities are getting faster and faster. A galaxy that is twice as far away is moving twice as fast. A galaxy that is three times as far away is moving this.
What is three times as fast?
At the end of 9 billion years the sun and earth had formed, the universe was still increasing in size and according to Hubble's Law the universe was getting bigger at this rate.
What is a greater rate?
These are the three primary evidences that support the current Big Bang Theory.
What is e = mc2, Hubble's Law, and the Cosmic Microwave Background Radiation?