Physicist explains what’s wrong with Kardashev scale
In the mid-20th century, Carl Sagan pioneered the search for extraterrestrial intelligence (SETI) in the United States, and prominent Russian astrophysicist Nikolai Kardashev did the same in the Soviet Union, the other great scientific superpower of the time. From that vantage point, he proposed using an alien civilization’s energy needs as a way to categorize … Read more