Slide 1 Distance Ladder Slide 2 Pre-class Problem You stand are looking at “famous local landmark” from two positions on either side of the “other famous local place”.…
Slide 1 Final review: Milky Way Galaxies Active galaxies Cosmology: –The future of the universe –The beginning of the universe Test schedule (in LL203) –8 am class:…
Slide 1 Galaxies Chapter Twenty-Six Slide 2 Guiding Questions How did astronomers first discover other galaxies? How did astronomers first determine the distances to galaxies?…