Astronomer Michael AHearn 61, principal investigator of NASAs Deep Impact Project, returns to campus as part of the Master Class: Alumni in Residence series. AHearn, also a professor of astronomy at the University of Maryland, led the team of physicists and engineers that in July 2005 intentionally collided a rocket with the comet Tempel 1, the first time humans had touched a comet in space.

AHearn is interviewed by Michael Naughton, a professor of physics at Boston College.

Speaker: Michael AHearn

Date: April 10, 2006

Length: 59:06