speech

A talk about the past, present, and future of the U.S. space program.

A speech on the influence of NASA on young people and the future of the United States.

NASA Celebrates the fortieth anniversary of Apollo 11, humanity's first landing on the moon.

Acceptance speech of the American Humanist Association’s Isaac Asimov Science Award on June 5, 2009.

Acceptance speech for the Isaac Asimov Award from the American Humanist Association.

Excerpt from the Maverick Speaker Series at the University of Texas at Arlington.

A speech on the controversy over re-classifying Pluto as a dwarf planet.

The Authors@Google talk on The Pluto Files at Google's New York office.

A discussion between Dr. Laura Danly and Dr. Tyson about Pluto, planethood, black holes, science policy, and intelligent design.

Will the world end in 2012?