The ordinary atoms that make up the known universe, from our bodies and the air we breathe to the planets and stars, constitute only 5 percent of all matter and energy in the cosmos. The remaining 95 percent is a recipe of 25 percent dark matter and 70 percent dark energy, both nonluminous components whose nature remains a mystery. In her March 2 public lecture, Katherine Freese will recount the hunt for dark matter, from the discoveries of visionary scientists like Fritz Zwicky, the Swiss astronomer who coined the term "dark matter" in 1933, to the deluge of data today from underground laboratories, satellites in space, and the Large Hadron Collider. - Perimeter Institute
Tonight, the Perimeter Institute of Theoretical Physics in Waterloo, Ontario, will be hosting a public lecture of cosmological proportions. Katherine Freese, of the University of Michigan, will delve into one of the biggest mysteries of the universe, over-viewing the history of indirect observations of dark matter and look to the future of dark matter discovery. As an added bonus, Canada's Minister of Science, Kirsty Duncan will introduce Freese and the whole event will be streamed live on this page.
Watch the live feed below at 7 p.m. ET; you can also ask Freese questions about her work via the Perimeter Facebook page or via Twitter during the event using the hashtag #piLIVE. Don't miss it!