What is the Kardashev scale ?

Method of measuring a civilization's level of technological advancement

Source: Wikipedia

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This article is about the measuring method. For the album by Greydon Square, see The Kardashev Scale (album).

The Kardashev scale is a method of measuring a civilization's level of technological advancement based on the amount of energy it is able to use. The measure was proposed by Soviet astronomer Nikolai Kardashev in 1964.

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The scale has three designated categories.

A Type I civilization, also called a planetary civilization—can use and store all of the energy available on its planet.

A Type II civilization, also called a stellar civilization—can use and control energy at the scale of its planetary system.

A Type III civilization, also called a galactic civilization—can control energy at the scale of its entire host galaxy.

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There are also 2 extended categories.

A Type IV civilization, also called a universal civilization, can control energy at the scale of its entire host universe.

A Type Ω or Type V civilization, also called a multi-universal civilization, can control energy at the scale of multiple universes, and may be able to create universes.

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Note: Based on this scale we (humans) are still type zero...