WASHINGTON: Perhaps we should breathe a sigh of relief; super- advanced aliens with the ability to harness the power of whole galaxies do not appear to exist, at least in our corner of the universe.
Scientists carried out a systematic search for evidence of “Kardashev Type III” civilisations so advanced that next to them humans might be considered barely intelligent apes.
Humans have not even achieved “Type I” status on the Kardashev scale, let alone Type II or Type III.
Faced by a Type III invasion, we would not stand a chance.
But luckily no such god-like beings are remotely within range of our solar system, according to the new research.
The Kardashev scale was drawn up in 1964 by Russian astronomer Nikolai Kardashev as a method of rating a civilisation’s level of technological advancement based on the way it uses energy.
By definition, Type III civilisations can access the energy of entire galaxies.
They may, for instance, be able to tap into the energy released by supermassive black holes or active galaxies known as quasars.
Such a civilisation would be expected to produce a large amount of waste heat that should be detectable by astronomers.
Scientists have now conducted a search for such a Type III civilisation ‘footprint’ among several hundred nearby galaxies and discovered nothing that cannot be explained naturally.
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