Uploaded November 2022 | Updated September 2026, 3 hours ago
1308th Ordinary General Meeting and 2021 Pollock Memorial Lecture of the Royal Society of NSW — 23 November 2022
“Most of our universe is missing! Adventures in the dark side of the cosmos”
Professor Geraint Lewis FRSN FLSW
Professor of Astrophysics, Sydney Institute of Astronomy, University of Sydney
Timing Marks:
00:00:00 Introduction to the Speaker: Dr Susan Pond AM FRSN FTSE FAHMS, President, Royal Society of NSW
00:04:20 Presentation: Professor Geraint Lewis FRSN FLSW
0:51:06 Q&A Session: moderated by Professor Sarah Brough FRSN, Professor of Astronomy, UNSW Sydney
01:06:37 Vote of Thanks: Emeritus Professor Christina Slade FRSN, Chair, Program Committee, Royal Society of NSW
Summary: Most of the cosmos, astronomers tell us, appears to be missing! They say it is dominated by an invisible dark side, dark matter and dark energy that have shaped the evolution of the entire universe. But why do astronomers believe there is this mysterious invisible cosmos surrounding us? In this talk, we will take a tour of the dark side, and explore the observations that reveal its presence. To understand the true nature of dark matter and dark energy, we will delve into the wealth of ideas and theories, and the current experiments underway to separate the true contenders from the scientific also-rans. Finally, we will peer into the future to reveal the next steps physicists and astronomers will take in their quest to shine a light into our cosmological dark side.
1308th Ordinary General Meeting and 2021 Pollock Memorial Lecture of the Royal Society of NSW — 23 November 2022
“Most of our universe is missing! Adventures in the dark side of the cosmos”
Professor Geraint Lewis FRSN FLSW
Professor of Astrophysics, Sydney Institute of Astronomy, University of Sydney
Timing Marks:
00:00:00 Introduction to the Speaker: Dr Susan Pond AM FRSN FTSE FAHMS, President, Royal Society of NSW
00:04:20 Presentation: Professor Geraint Lewis FRSN FLSW
0:51:06 Q&A Session: moderated by Professor Sarah Brough FRSN, Professor of Astronomy, UNSW Sydney
01:06:37 Vote of Thanks: Emeritus Professor Christina Slade FRSN, Chair, Program Committee, Royal Society of NSW
Summary: Most of the cosmos, astronomers tell us, appears to be missing! They say it is dominated by an invisible dark side, dark matter and dark energy that have shaped the evolution of the entire universe. But why do astronomers believe there is this mysterious invisible cosmos surrounding us? In this talk, we will take a tour of the dark side, and explore the observations that reveal its presence. To understand the true nature of dark matter and dark energy, we will delve into the wealth of ideas and theories, and the current experiments underway to separate the true contenders from the scientific also-rans. Finally, we will peer into the future to reveal the next steps physicists and astronomers will take in their quest to shine a light into our cosmological dark side.
