Electromagnetic Spectrum

The full range of electromagnetic radiation in order of wavelength from longest to shortest, or frequency from lowest to highest (radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays). In terms of visible light, a light spectrum runs from red to blue. Astronomers scan as much of the electromagnetic spectrum as possible to learn about the nature of the universe and how it came to be.


Energy: Tools of the Trade From radio waves to visible light to X-rays,...

Radio Programs

Adhara A different view of a hot star Thursday, January 30, 2014
More Moon and Companions Fine-tuning the view of the heavens Monday, February 21, 2011


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