Jonathan F. Ormes, Seth Digel, Igor Moskalenko, and Alexander Moiseev, 
	Goddard Space Flight Center, Greenbelt, Maryland
and Roger Williamson 
	Stanford University, Palo Alto, California
on behalf of the GLAST collaboration

Gamma rays in the band from 30 MeV to 300 GeV, used in combination with direct measurements and with data from radio and X-ray bands, provide a powerful tool for studying the origin of galactic cosmic rays. Gamma-ray Large Area Space Telescope (GLAST) will map supernova remnants and the galactic diffuse gamma radiation from the collision of cosmic rays with gas and dust on angular scales as fine as 10-20 arcmin. GLAST will be able to look for signatures of the acceleration of cosmic-ray nuclei by looking at the spatial and spectral structure of the gamma rays from supernova, molecular clouds and other galactic concentrations of matter. GLAST can study the acceleration of energetic particles in supernova shocks, their transport in the interstellar medium and their penetration into clouds.