No need to batten down the hatches — aliens not coming

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.