When it comes to space there’s one burning question that still has no firm answer – Are we alone in the Universe? According to scientists, there are as many as 40 billion sustainable planets that are inhabitable, and it’s just in our galaxy, Milky Way, not counting the infinite galaxies in the universe! So, there’s a good possibility that we are sharing this universe. There could be intelligent life that could date back hundreds of millions or even billions of years! They can feature a far more advanced civilization than us.
This leads us to another thing – can we categorize civilization and if yes, which level are humanity in? One astronomer, Nikolai Kardashev came up with the answer. While considering an important question related to the Search for Extraterrestrial Intelligence in 1964, Kardashev proposed a classification for ranking a civilization’s development. This would come to be known as the Kardashev Scale, which remains one of the most influential concepts in SETI to this day.
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