![]() ![]() So barring some tremendous revolution in our understanding of physics, a Faster-Than-Light (FTL) propulsion system can never exist. In short, achieving the speed of light is impossible, never mind exceeding it. Once c was achieved, the mass of the object would also become infinite. Therefore, for an object to reach the speed of light, an infinite amount of energy would have to be expended accelerating it. Since Fermi’s time, there have been several proposed resolutions to his question, which includes the very real possibility that interstellar colonization follows the basic rule of Percolation Theory. This became the basis of the Fermi Paradox, which refers to the disparity between high probability estimates for the existence of extraterrestrial intelligence (ETI) and the apparent lack of evidence. Into this, Fermi issued a statement that would go down in the annals of history: “ Where is everybody?“ According to various accounts, the conversation turned to aliens and the recent spate of UFOs. In 1950, Italian-American physicist Enrico Fermi sat down to lunch with some of his colleagues at the Los Alamos National Laboratory, where he had worked five years prior as part of the Manhattan Project. Welcome back to our Fermi Paradox series, where we take a look at possible resolutions to Enrico Fermi’s famous question, “Where Is Everybody?” Today, we examine the possibility that Earth hasn’t been visited by aliens because interstellar travel is not very practical! ![]()
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