Documents The extragalactic universe and distance measurements Discovery of the extragalactic universe The...

Slide 1 The extragalactic universe and distance measurements Discovery of the extragalactic universe The cosmic distance ladder. Slide 2 Slide 3 X-RAY Slide 4 Gamma Ray IR…

Documents Class 20 : The Milky Way Our own galaxy, the Milky Way. The debate about other galaxies.

Slide 1 Class 20 : The Milky Way Our own galaxy, the Milky Way. The debate about other galaxies. Slide 2 The Milky Way Credit & Copyright Barney Magrath Slide 3 Credit:…