These lectures are free.
The Barringer Lectures
Sponsored by The Barringer Crater Company, Arizona.
Co-Sponsored by the Arkansas Center for Space and Planetary Sciences, University of Arkansas
The Barringer Lectures at the University of Arkansas are held in the fall and spring of each year, using funds provided by the Barringer Crater Company. The company was formed (as the Standard Iron Company) by Daniel Moreau Barringer in 1902. The company still exists. It owns and maintains the meteorite crater in Arizona and an associated museum as public exhibitions. D. M. Barringer, a mining engineer, was a pioneer in the study of the meteorite crater. The company remains under the ownership of the Barringer family, Drew Barringer, grandson of Daniel Moreau Barringer, being the current President of the company. The company supports research and education in the impact crater and meteorite studies in many ways, most notably through the Barringer Medal which is awarded annually for lifetime contributions to research on craters and related topics.
The University of Arkansas gratefully acknowledges the sponsorship of this lecture series by the Barringer Crater Company.
Visit the past Barringer lecture archive page.
The Arkansas Public Lectures in Space and Planetary Science
Sponsored by the Arkansas Center for Space and Planetary Sciences, University of Arkansas
The Arkansas Public Lectures in Space and Planetary Science are a series of lectures delivered by researchers in the Arkansas Center for Space and Planetary Sciences. The talks are aimed at the widest possible audience of lay people, grade school students and their teachers, students, and faculty at the university who are in fields of endeavor other than science and engineering.
Public Lecture (free)
Presenter: Dr. Harold Yorke, Jet Propulsion Laboratory.
Space Center Auditorium, MUSE 201, 5:30 PM
The life cycle of massive stars (eight to one hundred times as massive as the sun) profoundly affects the evolution of our universe. Since their death throes forge the heavy elements upon which our biochemistry depends, we would not be here without them. This talk will describe the formation of massive stars and star clusters from the gravitational collapse of molecular clouds, and will chart their evolution as they consume their initial stores of hydrogen and helium to form increasingly heavier elements. When this process reaches iron, the most stable element, their nuclear fires are extinguished and, no longer able to stave off the collapse of their central regions, they explode as supernovae that for several days are far more brilliant than their parent galaxies.