The so-called "water hole" is a range in the electromagnetic spectrum in which searches for transmissions of extraterrestrial origin are being conducted.In what region of the electromagnetic spectrum does the "water hole" occur?

Question

Quizplus · Accepted Answer

The "water hole" occurs in the microwave region of the electromagnetic spectrum, ranging from approximately 1.42 to 1.67 gigahertz. It is called the "water hole" because it is a natural radio window where the absorption of radio waves by water (in its liquid or vapor state) is minimized. This makes it an ideal frequency range for listening for signals from extraterrestrial civilizations.

The So-Called "Water Hole" Is a Range in the Electromagnetic