Electromagnetic Spectrum

• Imagine the Universe - Electromagnetic Spectrum (HESARC-GSFC)
• The Electromagnetic Spectrum (GSFC)
• What Are Those Squiggly Lines? - Using Light to Learn About the Universe
• The Electromagnetic Spectrum (Univ of Tennessee) - lots of material + interactive java applets
• Electromagnetic Particles and Waves (Univ of Colorado)

Gamma Ray

• High-Energy Astrophysics Learning Center

X-ray

• Chandra Education Resources
• High-Energy Astrophysics Learning Center
• Rossi X-ray Timing Explorer Learning Center

Ultraviolet

• The Center For EUV Astrophysics - Science Education

Visible

• Education at Hubble's Space Telescope Science Institute

Infrared

• Infrared Astronomy - IPAC's Educational Outreach
• 2MASS Public Outreach and Education Page
• Live from the Stratosphere - Kuiper Airborne Observatory
• SOFIA's (Stratospheric Observatory for Infrared Astronomy) Education Page

Radio

• A Radio Astronomy Tutorial - Haystack Observatory
• National Radio Astronomy Observatory