Types of Galaxies
Formation of Galaxies
Components and Discoveries
The Milky Way
Neighbor Galaxies and Cosmos
100
What type of galaxy is this?
Elliptical
100
Is the Milky Way stationary within the universe?
No, it is affected by gravitational interactions like every object in the universe. This causes it to move towards or away from other objects in the universe.
100
What is the main source of light within galaxies?
Stars
100
Where is our solar system located in the Milky Way?
In one of the spiral arms, called Orion
100
What is the name of the galaxy that will merge with the Milky Way in approximately 3-4 billion years?
Andromeda Galaxy or M31
200
What type of galaxy is the Milky Way?
Spiral
200
What exists at the center of every large galaxy?
Supermassive black hole
200
William Herschel built larger telescopes and observed faint, fuzzy patches of light, which he initially called what?
Nebulae
200
What is the name of the black hole at the center of the Milky Way galaxy?
Sagittarius A*
200
What is the name of the Milky Way's galaxy cluster?
The Local Group
300
What is the most common type of galaxy in the universe?
Spiral galaxy
300
Put these structures in the order they would have appeared in the early universe:
Stars, Galaxies, Planetary Systems, Galaxy clusters
Stars, Planetary Systems, Galaxies, Galaxy clusters
300
What discovery did Charles Messier make in 1773 that will come to affect us in about 4 billion years?
The Andromeda Galaxy or M31
300
What is the diameter of the Milky Way (in light years)?
100,000 light years
300
How many galaxies does the Local Group contain?
a) 100-1,000
b) 10,000-50,000
c) 10-100
d) millions
c) 10-100
400
Which galaxies are typically older and contain little gas and dust?
Elliptical
400
What causes the movement of galaxies through the universe?
Gravity
400
What is the main part of the Milky Way Galaxy that contains most of the galaxy's Stars?
Disk
400
What part of the Milky Way is where new stars are formed?
The spiral arms
400
How are galaxies primarily distributed throughout the universe?
Clustered together in groups and clusters
500
What type of galaxy was abundant in the early universe before the other two types became more common?
Irregular
500
What is a term we use to describe the universe's underlying structure and interactions among structures?
(HINT: think of an animal many people are afraid of)
Cosmic web
500
What substances, tightly packed together, exist in the arms of a spiral galaxy?
Stars, gas, and dust
500
What are the four main parts of the Milky Way galaxy? (These are also parts of every other spiral Galaxy)
Bulge, Halo, Arms, and Disk
500
What are the names of two satellite galaxies to the Milky Way?
BONUS : How do these galaxies affect the Milky Way galaxy?
The Large and Small Magellanic Clouds or the Triangulum Galaxy or the Sagittarius Dwarf Elliptical Galaxy (SagDEG)
BONUS: They trigger star formation and affect its dynamics