The Accelerating Universe
1 hour 26 minutes 34 seconds
Astrophysics and Astronomy | Cosmology, Relativity, and Gravity | Physics | Stars, Interstellar Medium and the Galaxy
Dr. Brian Schmidt, a co-recipient of the 2011 Nobel Prize in Physics, presents a public lecture as part of the Oregon Nobel Laureate Symposium at Linfield College. In 1998, two teams traced back the expansion of the universe over billions of years and discovered that it was accelerating, a startling discovery contrary to the then-current theory that the universe's expansion should be slowing down. This revised understanding suggested that more than 70 percent of the cosmos is contained in a previously unknown form of matter, called dark energy. In this lecture, Schmidt, who led the High-Redshift Supernova Search Team, describes this historic development and explains how astronomers have used observations to trace the universe back more than 13 billion years, leading them to ponder the ultimate fate of the cosmos.
Schmidt, Brian, "The Accelerating Universe" (2013). Oregon Nobel Laureate Symposium. Video File. Submission 1.