Avi Loeb, a Harvard professor, claims that in 2017 alien technology visited Earth.

According to a Harvard professor, humans were visited by an e̳x̳t̳r̳a̳t̳e̳r̳r̳e̳s̳t̳r̳i̳a̳l̳ object in 2017.
Theoretical physicist Avi Loeb presents his hypothesis on a peculiar-shaped object that entered our solar system a number of years ago in his upcoming book Extraterrestrial: The First Sign of Intelligent Life Beyond Earth.
The “Oumuamua” interstellar object was initially seen in 2017 by Haleakala Observatory in Hawaii’s Pan-STARRS telescope. Researchers discovered that it had come from the direction of Vega, a star in the Lyra constellation that is roughly 25 light-years distant from Earth, and had passed across the ecliptic plane on September 6.
Oumuamua, which means “scout” in Hawaiian, began speeding up just three days later. It ultimately approached Earth on October 7 by “moving fast toward the constellation Pegasus and the blackness beyond,” according to Loeb.
The head of the astronomy department at Harvard University, Loeb, denies the idea that Oumuamua, which is thought to be the first interstellar object discovered in our solar system, was just another comet because it places too much emphasis on the “familiar.”
While speaking with the New York Post, he asked what would happen if a caveman saw a cellphone. He’s lived surrounded by rocks, so he would have assumed it was simply another shiny rock.
According to Loeb, there are two significant facts that imply Oumuamua wasn’t merely a comet but rather an advanced piece of e̳x̳t̳r̳a̳t̳e̳r̳r̳e̳s̳t̳r̳i̳a̳l̳ technology. The object’s measurements are the first specific information; it was found to be “five to ten times length than it was broad.” According to Loeb, the cigar-like form is unusual for a naturally occurring space object.
The movement of Oumuamua, according to the theoretical physicist, is the most important factor supporting his idea.
The straw that broke the camel’s back, he claimed, was the excessive push away from the sun.
According to Loeb, the gravitational pull of the sun would make a natural object to travel quicker as it gets closer before pushing it back and making it move slower as it gets farther away. This didn’t happen with Oumuamua, according to Loeb, who notes that as it got farther away, it accelerated “little, but to a highly statistically significant amount.”
Are we the brightest kids on the block, if we are not alone? Loeb queried. “We can get our act together and behave better if there was a species that exterminated itself via conflict or a change in the environment. Instead, we are wasting a lot of resources on Earth by engaging in destructive behavior like war. The website zigcity.com