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Department of Physics and Astronomy Distinguished Lecture Series Public Lecture Wednesday, March 16, 2011 8:00pm Kellogg Hotel and Conference Center, Auditorium IRWIN SHAPIRO Harvard/Smithsonian Center for Astrophysics Earth is continually bombarded by objects from space. Hundreds of tons enter our air space daily. The good news is that most of these objects are exceedingly small and disappear in our atmosphere with hardly any being noticed. My talk till concentrate on the larger cosmic intruders, which, luckily for us, strike Earth far less frequently. The key question is: What should we do to protect Earth from the interlopers that could cause global catastrophes? Public Lecture is free! Kim Crosslan Dept. Physics and Astronomy Michigan State University 1312 Biomedical Physical Sciences East Lansing, MI 48824 517-884-5531 [log in to unmask]