Most radio telescope searches for signs of intelligent life are performed in the water hole.

Question

Quizplus · Accepted Answer

The water hole, a quiet region of the radio spectrum between 1,420 MHz and 1,666 MHz, is often targeted in the search for extraterrestrial intelligence because it is thought to be a universal frequency band where intelligent life might transmit signals, being relatively free of natural cosmic noise and centered around the hydrogen and hydroxyl lines, which are significant for life as we know it.

Most Radio Telescope Searches for Signs of Intelligent Life Are