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Transcript of Glaxay Assignment
Origin of the Universe
What is the Universe?
The universe is a huge wide open space that holds everything from the smallest particle to the biggest galaxy. No one knows just how big the Universe actually is. Astronomers try to measure it all the time. They use a special instrument called a spectroscope to tell whether an object is moving away from Earth or toward Earth. Based on the information from this instrument, scientists have learned that the universe is still growing outward in every direction.
How did the Big Bang happen?
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!
What is a Star?
A star is a sphere of gas held together by its own gravity. The force of gravity is continually trying to cause the star to collapse, but this is prevented by the pressure of hot gas and radiation in the stars inside. This is called hydrostatic support.
The Doppler Effect is an increase (or decrease) in the frequency of sound, light, or other waves as the source and person move towards (or away from) each other. The effect causes the sudden change in pitch noticeable in a passing siren, as well as the red shift seen by astronomers.
Extraterrestrial Life In Space
Anyways How Did The Big Bang Happen?
According to the big bang theory, the universe began by expanding from an infinitesimal volume with extremely high density and temperature. The universe was actually smaller than even a pore on your skin. With the big bang, the area of space itself began expanding like the surface of an inflating balloon, matter simply rode along the stretching space like dust on the balloon's surface. The big bang is not like an explosion of matter in an empty space. Rather, space itself began with the big bang and carried matter with it as it expanded. Physicists think that even time began with the big bang.
What is the doppler effect?
A foreigner, especially one who is not a naturalized citizen of the country where he or she is living.
Is there proof?