Astronomy Notes

Part 14: Galaxies

John P. Pratt

Our Milky Way Galaxy

Known Anciently

The Sun's location

Other Galaxies

Galactic Latitude and Longitude


Mapping the Spiral Arms

Origin of Spiral Arms

Two Star Compostions

Formation of the Milky Way

The Galactic Center

The Local Galaxies

Distance to the Nearest Galaxies

The Magellanic Clouds

Dwarf Galaxies

The Andromeda Galaxy

Classifying Galaxies by Shape

Dark Matter

The Expanding Universe

The Hubble Relation

Clusters of Galaxies

Active Galaxies


The Big Bang