On multiple occasions, solar observatories photographed immense, solid-looking structures in the vicinity of our Sun. Are these objects a sign that a Type II alien civilization has occupied our solar system?
The Kardashev scale refers to a way to classify civilizations and their technological advancement by measuring their power consumption. As a civilization evolves, its energy requirements grow and determines a search for stronger power sources.
As such, a Type I civilization on the Kardashev scale would harness all energy sources available on its planet, focusing on productive processes such as renewable energy, fusion and ultimately, antimatter. Earth registers at around 0,73 and is expected to reach Type I in approximately 100 years.
A Type II civilization would have the ability to capture all or most of the energy output of their parent star(s). Their technological level would be far superior to that of Type I civilization. Thousands of years of technological advancements have provided a type II civilization with exotic materials or matter states, and the ability to feed an entire star to a black hole and capture the steady supply of high-energy protons near the event horizon.
Taking this perspective into account, the anomalies photographed near our Sun gain a different proportion. If an advanced alien civilization is present in our cosmic neighborhood, the only thing worse than their ability to wreak havoc would be our inability to stand up to them.
If we ever encounter a Type II civilization, we best hope it’s a pacifist one.