According to a groundbreaking study, aliens might have visited Earth before humans evolved on the planet. As per the new paperwork, issued in August in The Astronomical Journal, extraterrestrial civilizations could use the movement of stars in the Milky Way for more straightforward and faster star-hopping.
The study tried to offer a different answer to the well-known Fermi Paradox. The scientists concluded that we hadn’t met aliens so far because they visited us 10 million years ago for the last time. The Fermi Paradox, postulated by Enrico Fermi, asks why we did not contact aliens yet. Enrico Fermi also questioned the possibility to travel between stars.
The new study, however, comes up with a new theory. Aliens might not possess such advanced technologies to travel between vast distances as fast as we expect. Instead, they might be strategic and wait until their home solar system gets close to ours thanks to the continuous movement of stars in the Milky Way.
Aliens Might Have Visited Earth Before Humans Evolved
“If you don’t account for the motion of stars when you try to solve this problem, you’re basically left with one of two solutions. Either nobody leaves their planet, or we are in fact the only technological civilization in the galaxy,” explained Jonathan Carroll-Nellenback, the leading author of the study, for Business Insider.
As the study reported, aliens might have visited Earth 10 million years ago, way before humans evolved on our planet. That means we cannot find any signs of their journey here. Also, the reason why the extraterrestrials haven’t come back is that they might not want to visit a planet that already has life.
On the other hand, aliens could plan to visit more potentially habitable worlds in the Milky Way, which we already know that are rare. And that before re-visiting the ones they’ve previously visited, for scientific purposes, allegedly. However, “it doesn’t mean that we’re alone. It just means that habitable planets are probably rare and hard to get to,” added Jonathan Carroll-Nellenback.