Astronomers using the Kepler telescope have noted something odd about star KIC 8462852 . It has some very large changes in its brightness. Most likely these changes have random, natural causes, but still amongst the possibilities is the chance that these changes are in fact artificial- that there are space aliens and that they have technology that can harvest energy on a stellar scale. Cosmologists have often speculated on how we might recognise a civilisation beyond our own solar system, and they have applied different criteria to identify the level of development of any intelligence that we may encounter. These criteria were first suggested by a Russian cosmologist in the 1960s and are therefore known as the Kardashev scale . Broadly speaking Kardashev suggests that the level of development of any given civilisation would depend on the ability to harness energy. Thus Level I civilisations could control the whole energy provided by their home planet, Level II could control energy at
Musings on World events from the perspective of a Social and an Economic Liberal.