The whole Universe was in a hot dense state, then nearly 14 billion years ago expansion started. Wait... is the Bang Bang true and how do we know? In this talk Associate Professor Emma Ryan-Weber from the Centre for Astrophysics and Supercomputing will describe the observational evidence for Big Bang Cosmology and how it sets the initial conditions for every atom in the Universe. The talk is especially suitable for year 11 teachers and students studying VCE Physics Unit 1, area of study 3 "What is matter and how is it formed". Presented on 10 February 2017.
Ryan-Weber leads the intergalactic medium research group at Swinburne. Her science focuses on detecting elements heavier than Helium in absorption at very high redshifts (12 billion years ago). To achieve this we use near-infrared spectroscopy towards high redshift quasars on the world's largest telescopes including Keck (Hawaii) and the VLT (Chile). She received her PhD from the University of Melbourne in 2004, spent 5 years at the University of Cambridge and commenced her position at Swinburne in 2009. Ryan-Weber is one of three Swinburne CIs for the CAASTRO-3D Centre of Excellence. Recorded on 10 February 2017.
How did the elements come into existence, and how we can use them to count the number of stars in the early Universe? This talk will reveal the dark ages of the Universe.