Incoming alien UFO? Scientists warn of mysterious object 3I/ATLAS headed for Earth

A controversial new study has sparked global curiosity, and alarm, by suggesting that a mysterious interstellar object speeding through the solar system might be a hostile alien spacecraft on a surveillance mission. Published on July 16, the paper has proposed the possibility that this entity, known as 3I/ATLAS, could pose a significant threat to humanity when it approaches the Sun later this year.

"The consequences, should the hypothesis turn out to be correct, could potentially be dire for humanity," the authors wrote in the non-peer-reviewed paper, which was posted on the arXiv preprint server.

What is 3I/ATLAS?

Discovered on July 1, the object named 3I/ATLAS is travelling at over 130,000 mph toward the Sun, according to Live Science. It was confirmed as an interstellar object within 24 hours of detection. Early estimates indicated it could be a comet measuring up to 15 miles in diameter, making it larger than Manhattan.

While the majority of scientists believe 3I/ATLAS is a naturally occurring object, the new study claims it may actually be an alien surveillance device disguised as a comet.

Who is behind the theory?

The paper was authored by a trio of researchers: Harvard astrophysicist Avi Loeb, known for his unconventional theories on alien life, along with Adam Hibberd and Adam Crowl from the Initiative for Interstellar Studies based in London. Loeb previously suggested in 2017 that the interstellar visitor ʻOumuamua might have been a reconnaissance craft of alien origin, citing its strange shape and unexplained acceleration.

In their current study, the researchers suggest 3I/ATLAS may follow a similar pattern. Its exceptional speed and unusual angle of entry into the solar system, they argue, might point to an extraterrestrial design. "Various benefits to an extraterrestrial intelligence," Loeb wrote in a blog post, could be achieved through such a trajectory.

Possible alien spy tactics?

The paper theorises that the object's planned path — which includes flybys of Mars, Jupiter and Venus — could enable alien forces to quietly plant surveillance instruments on those planets. The timing of its closest approach to the Sun, known as perihelion, will occur in late November, conveniently placing it out of view from Earth-based telescopes at its brightest.

"This could be intentional to avoid detailed observations from Earth-based telescopes when the object is brightest or when gadgets are sent to Earth from that hidden vantage point," Loeb noted.

The dark forest hypothesis

The researchers also bring up the “dark forest” hypothesis, the idea that intelligent extraterrestrial life may deliberately remain silent to avoid threats. If 3I/ATLAS turns out to be a "technological artifact," it could validate this chilling theory. Loeb further suggested that the possibility of an alien offensive cannot be ruled out and that Earth might need to consider preparing defence mechanisms.

“It is therefore impractical for earthlings to land on 3I/ATLAS at closest approach by boarding chemical rockets, since our best rockets reach at most a third of that speed,” Loeb wrote, pointing out that the object’s velocity would make interception nearly impossible.

Scientists remain sceptical

Despite the sensational claims, many astronomers have dismissed the theory outright, asserting that 3I/ATLAS is most likely a comet from another solar system. Samantha Lawler, a planetary scientist at the University of Regina in Canada, told Live Science, “All evidence points to this being an ordinary comet that was ejected from another solar system, just as countless billions of comets have been ejected from our own solar system.”

Even Loeb himself admitted in his blog post that the alien surveillance theory might not hold up. “By far, the most likely outcome will be that 3I/ATLAS is a completely natural interstellar object, probably a comet,” he acknowledged.

Not peer-reviewed, but 'fun'

The authors of the paper have cautioned readers not to take the hypothesis as fact. “This paper is contingent on a remarkable but, as we shall show, testable hypothesis, to which the authors do not necessarily ascribe, yet is certainly worthy of an analysis and a report,” they wrote. “The hypothesis is an interesting exercise in its own right, and is fun to pursue, irrespective of its likely validity.”

Still, critics argue the theory undermines legitimate scientific inquiry. Chris Lintott, an Oxford-based astronomer who simulated 3I/ATLAS’s galactic journey, told Live Science: “Any suggestion that it’s artificial is nonsense on stilts, and is an insult to the exciting work going on to understand this object.”