Suppose we were able to detect radio signals from an intelligent civilization in the Coma cluster of galaxies.If we were to send a message to this civilization,how long would it take to get a reply?

Question

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The Coma cluster of galaxies is approximately 320 million light-years away from Earth. This means that the radio signals we detect from an intelligent civilization in the Coma cluster would be 320 million years old by the time they reach us. And if we were to send a message in response, it would take an additional 320 million years for our message to reach the civilization. Therefore, the total time it would take to get a reply would be approximately 640 million years, which is closest to option A) 600 million years.

Suppose We Were Able to Detect Radio Signals from an Intelligent