Understanding Dark Matter

The Australian Institute of Physics (AIP),
Centre of Excellence for Particle Physics at the Terascale (CoEPP) and
Centre for the Subatomic Structure of Matter (CSSM)
present the
2017 DARK MATTER DAY Public Lecture on

Understanding Dark Matter

Professor Anthony Williams
University of Adelaide


Tuesday 31st October, 6:30 pm
Kerr Grant Lecture Theatre
University of Adelaide


There’s more to the universe than stars, planets, asteroids, comets, and space dust and the familiar matter that we interact with on a daily basis. Despite the fantastic successes of our theories that have predicted the Higgs boson and gravitational waves, there’s a lot about the universe that we can’t yet explain.

We believe that dark matter, which we have so far only detected through its gravity-based effects in space, makes up about a quarter (26.8 percent) of the total mass and energy of the universe. Something that is driving the universe’s accelerating expansion – which we call dark energy – accounts for another 68.3 percent. The ordinary matter, like stars and planets and galaxies, makes up just 4.9 percent of the total mass and energy of the universe.

It seems likely that dark matter is made up of undiscovered particles and one of the major challenges today is how to combine this possibility with our already highly successful Standard Model of particle physics that so well explains the behaviour of normal matter.