Universe
This is what the universe is made of.
What is matter and energy.
This is the Big Bang
What is the theory that describes how the universe expanded from an initial state of high density and temperature.
This is a galaxy
What is a collection of gas, dust, billions of stars and planets and other cellestial objects.
The two most common galaxies
What are spiral and elliptical
This is in the center of our universe
What is Sagittarius A, a black hole
95% of our universe is made of this
What is dark matter
This is the evidence that Hubble found to support the Big Bang
What is the red shift.
This is the name of our galaxy.
What is the Milky Way?
These are the largest galaxies
What is elliptical
This is the galaxy closest to ours
What is Andromeda?
This was the first evidence of the Big Bang found by Arno Penzias and Robert Wilson
Cosmic microwave background that is radiation left over from the big bang
This causes a redshift
What is when an object making light moves away from the observer.
Our galaxy is this type.
What is a spiral.
These galaxies are great nurseries for stars
What are irregular galaxies
What is 30,000 light years?
The name of the period after the Big Bang when the universe expanded repidly.
What is inflation.
This is the radiation era
What is the moment after the Big Bang where the high temperatures created radiation and energy not matter.
This is the length of our galaxy.
What is 100,000 light years.
Where young stars are located in a spiral galaxy
What are the arms
This is what will happen to our galaxy in 4.5 billion years.
What is it will collide with the Andromeda galaxy.
This is the "singularity".
What is when the universe was smaller than an atom before the Big Bang.
This is the difference between the steady state and big bang theory.
What is the steady state states that matter is being made continuously as the universe expands and the big bang states all matter in universe was made at once.
This is the number of stars in our galaxy.
What is more than 200 billion.
These galaxies have less dust and interstellar matter
What are lenticular and elliptical galaxies
This is how an infra-red telescope lets us see the center of our galaxy.
What is visible light can not penetrate the dust in the center but infra-red light, which is from heat, can penetrate the dust. (Think predator)