100 years of galaxy redshifts (Free Astronomy Public Lectures)

Presented by Prof. Karl Glazebrook on 9th September 2012.On Sep 17th 1912 Vesto M. Slipher at Lowell Observatory measured the first redshift of a galaxy and established their large velocities, this laid the groundwork for Hubble's discovery of the expansion of the Universe. One hundred years later we have measured close to 2 million galaxy redshifts (about one third of these measured in Australia) and this has been fundamental to our understanding of the structure of the Universe. In this public lecture, Professor Karl Glazebrook will tell the story of how galaxy redshift surveys have transformed our picture of cosmology and what the future might entail.