The Milky Way and Other Galaxies Flashcards
1
Q
What is a Galaxy?
A
A collection of stars, dust, and gas bound by gravity.
2
Q
What is a Cluster?
A
A group of stars or galaxies bound by gravity.
3
Q
What is a SuperCluster?
A
A very large group of galaxies bound by gravity.
4
Q
What are the three types of Galaxies?
A
Spiral, Elliptical, and Irregular.
5
Q
What is Interstellar Matter?
A
The gas and dust located between stars in a galaxy.
6
Q
What is a Quasar?
A
Very luminous objects that produce energy at a high rate and are thought to be the most distant objects in the universe.
7
Q
How do Galaxies change over time?
A
Galaxies can interact with each other with gravitation and change shape.
