It Is Unlikely That We Will Be Able to Detect

question 4

Multiple Choice

It is unlikely that we will be able to detect the signals from civilizations in other galaxies because

• A) signals from other galaxies will be severely weakened by distance, making them far harder for us to detect
• B) other galaxies are unlikely to harbor intelligent civilizations
• C) signals from civilizations on other galaxies will not reach us before we give up listening
• D) they will most likely transmit at wavelengths that will be absorbed by intergalactic gas

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