What do radio waves, infrared radiation, visible light, ultraviolet radiation, X-Rays and gamma rays have in common? How do they differ? Do astronomers look at visible light only? If not, how can they "see" objects in space at other frequencies?© BrainMass Inc. brainmass.com June 4, 2020, 12:31 am ad1c9bdddf
Here are the answers to your four questions:
1) All the different waves listed on your first question are aspects of the so called "Electromagnetic Radiation". These waves or radiations have different wavelengths and frequencies, but they all travel through space at the same speed. So... they constitute a single phenomena called "Electromagnetic Radiation" and they all travel with the same speed (c, the speed of light).
2) These "waves" or "radiations" differ on a) wavelength (w), or the distance over which the wave repeats itself, b) frequency, or the ...
Electromagnetic radiation and telescopes are contextualized.