Involves

Word

Kardashev scale

KAR-duh-shev skayl · noun

A classification of civilizations by the total energy they can harness: Type I commands the energy of a planet, Type II that of a star, Type III that of a galaxy

Examples

  • By the Kardashev scale, humanity has not yet reached Type I: we don't fully command our own planet's energy.

  • Powering a star-sized computer would be a Type II undertaking on the Kardashev scale.

Origin

Proposed by the Soviet astronomer Nikolai Kardashev in a 1964 paper on transmission from extraterrestrial civilizations. He needed a way to reason about signals from societies far more advanced than ours, and energy use was the one metric that made sense at cosmic distances.

How it connects

A ladder that ranks civilizations by the single quantity you could detect light-years away: power.

This word appeared in Civilization measured in energy, the Involves connection for August 27, 2026, which asked: How would you rank civilizations you cannot see or visit?

Check yourself

What does the Kardashev scale measure?

The amount of energy a civilization can harness and use.. Right. Kardashev chose energy because it is measurable at a distance and roughly tracks technological capability.

What the sources establish

  • Kardashev classified hypothetical civilizations into three types by energy command: planetary, stellar, and galactic scales.

Sources