Physics Magazines and Journals

• AIP Journals
• APS Journals
• Computers in Physics
• Computing in Science & Engineering
• The Industrial Physicist
• Physics Today
• Physical Review Focus
• Nature
• Science

Physics Portals and News Outlets

• PhysLink
• PhysOrg
• PhysicsWorld
• PhysicsCentral

Science Journal Search Engines

• Subject Guide to Physics
• Scitation

Physics Organizations

• American Association of Physics Teachers
• American Institute of Physics
  • statistics on the physics/astronomy communities
• American Physical Society 
• National Council on Undergraduate Research
• National Research Council and the National Academy of Sciences
• National Science Teachers Association

Government Agencies 

• Department of Energy
• Nasa
• National Institutes of Health

National Laboratories

• The Argonne National Laboratory
• Brookhaven National Laboratory
• Fermilab -- Fermi National Accelerator laboratory
• LASSP --The Laboratory of Atomic and Solid State Physics
• Lawrence Berkeley Laboratory (LBL) 
• Los Alamos National Laboratory
• Sandia National Lab
• Stanford Linear Accelerator
• Continuous Electron Beam Accelerator Facility (CEBAF)