Galaxies Flashcards
1
Q
What is a galaxy?
A
A huge group of single stars, star systems, star clusters, dust and gas held together by gravity
2
Q
How big are galaxies?
A
The largest galaxies have more than a trillion stars.
There are billions of galaxies in the universe.
3
Q
What is the sun and where is it located?
A
-a star
-in the Milky Way galaxy
-the sun and it’s planets are about 2/3 of the way from the center of the galaxy
4
Q
What are the three types of galaxies?
A
Spiral galaxies, elliptical galaxies, irregular galaxies
5
Q
What are spiral galaxies?
A
A nucleus of bright stars and two or more spiral arms
6
Q
What type of galaxy is the Milky Way?
A
A spiral galaxy
7
Q
What are elliptical galaxies?
A
Spherical or flattened discs
8
Q
What are irregular galaxies?
A
No definite shape
