Our Milky Way Galaxy
Our Place in the Milky Way
- The naked eye Milky Way:
southern hemisphere, zoom to dark lanes, more bands - Galileo: telescope
- Immanuel Kant
- William Hershel's model (top view)
- Harlow Shapley globular cluster distribution: on the sky, in space
- interstellar dust:
microscopic view,
in a dark cloud
and reflection nebula
another example of scattering and absorption - simulated view of Milky Way seen from outside; a possible similar galaxy
Multiwavelength Milky Way: All-Sky Views
- optical: dust-obscured
- near infrared: stars, less dust
- radio at 21 cm: neutral hydrogen atoms
Galactic Rotation Curve
- warmup: solar system rotation curves here, here, and here
- Milky Way rotation curve: data
- Milky Way rotation curve: interpretations
Milky Way Dark Matter
- What the heck is it?!?
- what it is not
- favorite candidate today: exotic relic particles
underground detection experiment
Changing Gears: The Big Picture
Galaxies
