Which of the following kinds of signal do we currently have the best chance of detecting with currently technology?
A) a signal used for communication between a civilization's home world and another star system
B) a signal used for communication between a civilization's home world and another planet in its own planetary system
C) an intentional signal beacon
D) a signal used for local communication in the world where the intelligent beings exist

Question

Quizplus · Accepted Answer

An intentional signal beacon is the most likely signal to be detected with current technology. This is because it is a deliberate transmission made specifically for the purpose of being detected by other civilizations. It is also likely to be transmitted at a high power level and on a specific frequency, making it easier to identify and distinguish from background noise. Signals used for communication between planets, star systems or local communication are unlikely to be detected due to the vast distances involved and the fact that they may be very weak and diffuse by the time they reach us.

Which of the Following Kinds of Signal Do We Currently