Astronaut and spacewalker John M. Grunsfeld will visit Arizona State University on Tuesday to discuss space exploration.
Grunsfeld, an astrophysicist who has flown on four space shuttle missions, was NASA’s chief scientist from 2003 to 2004. He is preparing for a servicing mission for NASA’s Hubble Space Telescope. Grunsfeld’s talk, “Exploring the Universe: From Low Earth Orbit to the Edge of the Cosmos,” will be 5 p.m. in the Physical Science Building’s F wing, Room 166. The building is on Tyler Mall, just south of University Drive and west of McAllister Avenue in Tempe.
The discussion is the university’s annual Robert S. Dietz Lecture presented by the School of Earth and Space Exploration.
Dietz was a benefactor of the former Department of Geological Sciences and supported the department’s museum.
The lecture is free and open to the public.
For information, call (480) 965-5081.





