The Fermi Paradox is an attempt to find a solution to the topic of aliens’ whereabouts. Given that our star and Earth are part of a very young planetary system in comparison to the rest of the universe, and that interstellar travel may be relatively simple, the hypothesis suggests that Earth should have previously been visited by aliens.
According to legend, Enrico Fermi, the Italian scientist best known for developing the first nuclear reactor, came up with the hypothesis over a casual lunchtime comment in 1950. However, the ramifications have left alien experts scratching their brains for decades.
According to the Search For Extraterrestrial Intelligence (SETI) Institute in Mountain View, California, “Fermi concluded that any culture with a modest quantity of rocket technology and an immodest amount of imperial motivation might swiftly conquer the whole galaxy.”
In the abstract, Hart stated, “We observe that no sentient creatures from outer space are presently present on Earth.” “The notion that there are no other sophisticated civilizations in our galaxy is offered as the best explanation for this finding.” More study in biology, planetary formation, and atmospheres, he added, is needed to narrow down the solution.
While Hart was more of the view that we were the galaxy’s sole advanced civilisation (he believed that no one could have visited us without starting their journey less than two million years ago), he offered four points to explore the paradox:
1) Aliens never arrived because of a physical barrier “that renders interstellar travel impractical,” which might be connected to astronomy, biology, or engineering.
2) Aliens have made the decision to never visit Earth.
3) For aliens to reach us, advanced civilizations emerged too recently.
4) We know that aliens have visited Earth in the past, but we haven’t seen them.