What is the maximum distance from which we could detect a signal?
Establishing contact as far away as 100 light-years should present no problem. Using research grade equipment, detecting signals from distances up to 1000 light-years are feasible. • For what time period is each star examined? Some debate lies within the details of the question of how long each star should be exmined. If we assume that the sending civilization will try to communicate with the nearest 1,000 likely candidates for intelligent life, using modern apparatus capable of redirecting a laser 10 times per second, the civilization could illuminate all 1000 solar systems in 100 seconds. If this is the case, then we could expect to receive a pulse once every 100 seconds. However, if the number changes from the 1,000 to the 1,000,000 closest candidates, then it would take about 28 hours to illuminate the entire field. This would mean that we would have to observe each of a million stars for over a day each; not a feasible research goal. However, it is highly likely that the transmitt
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- What is the maximum distance from which we could detect a signal?
