The Dark Side of the Universe: Dark Matter and Dark Energy

In recent decades, cosmology has become an observational science that has led to two mysterious observations: about a quarter of the energy density of the universe is in the form of "dark matter," which gravitationally attracts but is otherwise invisible, and about two-thirds is "dark energy," which causes space itself to expand at an ever-increasing rate. Only a small fraction of the energy in the universe is due to matter that we understand!  In this visual presentation, we will explore the evidence for dark matter and dark energy, and some of the experiments being developed to investigate its fundamental nature.   

Speaker: Dr. Pat Burchat, Stanford University