Multiple Choice
Why was the globular cluster M13 selected as the target for the 1974 Arecibo message?
A) globular clusters are the most likely place to find stars with planetary systems
B) stars in globular clusters are rich in heavy elements, the building blocks of life
C) signals from advanced civilizations have previously been detected coming from this cluster
D) globular clusters are densely packed with stars, hence maximizing the probability of interception by an advanced civilization
Correct Answer:
Verified
Correct Answer:
Verified
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