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Paul Davies | Dark Forces of the Cosmos

UNSW Physics presents "Public Talks" with Paul Davies and his presentation entitled "Dark Forces of the Cosmos" - Friday, 12 December 2014 Summary: Astronomers have estimated that stars, gas and dust make up only 4 per cent of the mass of the universe. As for the rest, it remains a mystery. Measurements suggest that 25 per cent is in the form of some sort of dark or invisible matter, not made of atoms or familiar subatomic particles, but something else entirely. The lion's share of the mass of the universe, however, is even weirder. Dubbed "dark energy", it seems to be a form of energy intrinsic to empty space itself with the bizarre property that it antigravitates. Because dark energy dominates all other forms, it is causing the expansion of the universe to speed up, propelling the entire cosmos towards a spectacular fate Speaker Bio: Prof. Paul Davies is a cosmologist, theoretical physicist, astrobiologist, science communicator and a best-selling author. He is also the director of BEYOND: Center for Fundamental Concepts in Science: https://beyond.asu.edu/ Credits: Director, Camera & Editor: Don Kountouris Special Thanks: Footage Island, NASA ArtSpace & Beachfront B-Roll -- UNSW Physics at UNSW Australia aims to raise the awareness of physics & astronomy to the greater community. --