MEDIA RELATIONS OFFICE
JET PROPULSION LABORATORY
CALIFORNIA INSTITUTE OF TECHNOLOGY
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
PASADENA, CALIF. 91109. TELEPHONE (818) 354-5011
http://www.jpl.nasa.gov

Photo Caption                                      

This artist's concept, courtesy of Ball Aerospace and 
Technologies, Inc., depicts the Deep Impact spacecraft.  The 
mission will send a copper projectile into comet P/Tempel 1, 
creating a football field-sized crater as deep as a seven-story 
building.  Spacecraft instruments and ground-based observatories 
will study the icy debris blasted off the comet, as well as the 
comet's pristine interior material.