Which band of the electromagnetic spectrum do astronomers suggest is likely to be the best (cheap, little competition from nature, penetrates atmospheres) for communication between civilizations around different stars?
A) radio waves
B) x-rays
C) ultra-violet
D) infrared
E) gamma rays

Question

Quizplus · Accepted Answer

Radio waves are the best choice for communication between civilizations around different stars as they are inexpensive, there is little competition from nature and they can penetrate through the atmosphere without much attenuation.

Which Band of the Electromagnetic Spectrum Do Astronomers Suggest Is