Chapter 10. The Milky Way and other Galaxies.
Test SEVEN includes questions of chapter TEN ONLY.
I encourage you to see the video-lectures of chapter TEN and the power point slides posted
on Bb under Information Type of Galaxies
Today I posted the last pa
The Milky Way (MW). Our Home Galaxy.
The MW and the Southern
European Observatory La Silla,
Fisheye view of the Milky Way.
Mont Megantic Observatory in
near-infrared light, HST Ultra Deep Field view
of the universe.
The faintest and reddest objects in the image are
galaxies that formed 600 million years after the
There are ~100 billion galaxies in the observable
See enlarged view
Main Points covered in the last class.
We need to know the value
of the Hubble constant Ho
because different values of
the constant will give
1- speed of recession for
the same distance
2- rate of expansion for the universe. (The expansion is