Ever wonder what goes on at SLAC National Accelerator Laboratory? The SLAC Public Lecture Series is your chance to find out! The evening lectures highlight the cutting-edge science happening at the laboratory. From the nanotechnology of diamonds to the latest Higgs Boson discoveries, SLAC public lectures provide non-scientists with a unique insight into the workings of our universe.
The Tug of War that Shapes the Universe
Join us on Zoom (passcode 650650)
The lecture is one hour, followed by Q&A.
As the universe expanded from the Big Bang, regions where the density of matter was higher than average grew into galaxies and clusters of galaxies. The overall form of the universe and the evolution of galaxies within it have been shaped by a delicate balance of two competing forces – the inward gravitational pull of matter, dominated by dark matter, and the outward stretching of space, controlled by a mysterious force called dark energy. In this lecture, I will describe how we can gain an understanding of these hidden elements by measuring the properties of galaxies and the web of structure they form. The Dark Energy Survey (DES) has done this for one-eighth of the sky, observing and measuring more than 100 million galaxies. I will illustrate how we use DES images of this huge number of galaxies to trace the growth of structure and measure the expansion of the universe under the influence of its dark components.
Justin Myles is a PhD candidate in physics at Stanford University with a focus on astrophysics and cosmology. Justin’s research uses observations of the largest structures in the universe – galaxies and clusters of galaxies – to understand its past and future development. He is a member of the Dark Energy Survey collaboration that has collected detailed images covering a large swath of the sky from a telescope in Chile. Using the data from these images of galaxies and the hot clouds of gas in which they are often found, Justin is working to extract the basic parameters governing the expansion of the universe.
Public Lecture Highlights
Learn more about the work that we do by watching from our collection of popular recordings from our YouTube Playlist that highlights the breadth of our research.
Particle accelerators are used every day in a wide range of scientific, medical and industrial applications.
Presenter: Auralee Edelen
Giant planets can be up to 13 times the mass of Jupiter, while the least massive stars are about 80 times the mass of Jupiter.
Presenter: Eric Nielsen
SLAC's X-ray laser, the Linac Coherent Light Source, launched a new generation of light sources when it opened 10 years ago last month, with beams 10 billion times brighter than any before.
Presenter: Sebastien Boutet
At the center of the Earth, matter is crushed under pressures millions of times higher than we experience here on the surface.
Presenter: Emma McBride
Cryogenic electron microscopy (cryo-EM) is a revolutionary technology for making 3D images of the inner workings of cells in much higher resolution than ever possible before.
Presenter: Wah Chiu
Increased demand for energy storage in consumer electronics, electric vehicles and the power grid presents opportunities and challenges for rechargeable battery research and development.
Presenter: Yi Cui
Solar power is a clean and renewable source of energy, but it has struggled to compete with fossil fuels on cost.
Presenter: Kevin Stone
On September 14, 2015, the Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) made the first direct measurement of a gravitational wave coming from deep space.
Presenter: Brian Lantz
Dark matter is one of the most mysterious components of the universe.
Presenter: Tom Shutt
Shortly after the birth of the universe, space was filled by a plasma that was literally red-hot.
Presenter: Zeeshan Ahmed
The high standard of living we enjoy today is made possible by catalysts – behind-the-scenes agents that promote chemical reactions in the vast majority of industrial processes, including production of fertilizers, gasoline and other essential products.
Presenter: Simon Bare