2. Kadashev scale

In 1964, the former Soviet astrophysicist Kadashev proposed the Kadashev scale as a way to measure the technological level of a civilization. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 The info scale is only theoretical, and the object it measures, that is, highly evolved civilizations, is only in human speculation, and no one has seen it firsthand, but the significance of this scale is that it considers the energy consumption of the entire civilization from the perspective of the universe. The Kadashev scale classifies civilizations outside the earth according to the power of the transmitted signal, which is divided into three types, but in the application, because it has been quantified, the types can be infinite.

Type 1 civilizations are capable of mobilizing energy equivalent to the current output of the entire Earth for communication, which is 10^16 watts.

The energy power used by our earth's civilization is increasing at an alarming rate, and the current earth's power output is about 10^15 to 10^16 watts, while the earth's output power is now mainly used for heating, electricity, transportation, and other uses that have nothing to do with the communication of alien civilizations. For this reason, Earth is not yet a Type 1 civilization.

Type 2 civilizations are capable of using the equivalent of a typical star for communication