Show:
The Universe
Galaxy Classes
Star Formation
100
Collection of stars, gas and dust
What is a galaxy?
100
The galaxy classes.
What are spiral, elliptical, S0 and irregular?
100

Type of galaxy where star formation occurs.

What is spiral?

200
Everything, including billions of galaxies
What is the universe?
200
Football shaped galaxies with a reddish color and very little dust.
What are ellipticals?
200
Color of galaxies actively forming stars?
What is blue?
300
Spiral galaxies with a rectangular shaped central bulge, classified as SB?
What are barred spirals?
300
Color of galaxies with no recent or current star formation?
What is red? (blue stars have evolved and died)
400
A galaxy classification diagram with ellipticals on the handle and spirals on the tines.
What is the Hubble Tuning Fork?
400

Type of stars present in spiral galaxies.

What is all types? Young/old, high/low mass, blue/red

500
Galaxies with mixed properties that sit at the junction of the Hubble Tuning Fork?
What are S0?
500

Reason why spiral arms are blue

What is blue stars (hot, young, O & B type)? Stars are forming there.