Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
5 Cards in this Set
- Front
- Back
|
Galactic Disc |
-an immense, circular, flattened disc made up of luminous stars and interstellar matter -a region of active star formation containing both old and new stars -organized into spiral arms |
|
|
Galactic Bulge |
-thick distribution of gas and stars around the centre of a galaxy -contains lots of old and young stars -a lot of formation occurs here |
|
|
Galactic Centre |
-the point about which a spiral galaxy rotates -once thought to be a super massive black hole |
|
|
Galactic Halo |
-extends far above and below the disc -contains globular clusters and old stars -has almost no gas or dust -no new star formation |
|
|
Globular Clusters |
-spiral collections of hundreds of thousands of stars tightly bound by gravity |
