Grimes gives chilling theory behind mysterious object aiming at Earth that Harvard scientist claims is 'not natural'

Grimes has weighed in on an unusual theory that a comet that's currently traveling through space isn't what it seems...

Comet 3I/ATLAS was discovered earlier this year and astronomers have been tracking its movements ever since.

It was detected by the Chile-based and NASA-funded Asteroid Terrestrial-impact Last Alert System and the International Asteroid Warning Network (IAWN) then started making plans to observe the object.

Starting on November 27, they will monitor comet 3I/ATLAS for the next two months.

"While it poses no threat, comet 3I/ATLAS presents a great opportunity for the IAWN community to perform an observing exercise due to its prolonged observability from Earth and high interest to the scientific community," the IAWN said.

The first sighting of 3I/ATLAS was recorded in July (ATLAS/University of Hawaii/NASA)

It added: "This 3I/ATLAS campaign is the 8th IAWN observing exercise since 2017 – IAWN holds these exercises roughly once a year."

The comet has so far gained a lot of attention, even outside of the scientific community, because of one physicist's theory about the space object.

Avi Loeb's theory

The Harvard scientist has been tracking 3I/ATLAS and has been noting its anomalies, one being that the supposed comet didn't break up after passing the Sun, as many comets do.

"Images taken of 3I/ATLAS on November 11, 2025 show a single body, with no evidence for breakup following the perihelion passage [the moment an astronomical object in orbit around the Sun reaches its closest point to the Sun] two weeks earlier," Loeb penned on his blog, adding: "Given the large-scale jets reported recently, the fact that 3I/ATLAS remains a single body is surprising for a natural comet."

Loeb continued: "Technological thrusters which point their exhaust towards the Sun would accelerate away from the Sun. This post-perihelion maneuver might be employed by a spacecraft that aims to gain speed rather than slow down through the gravitational assist from the Sun."

Loeb has his own scale when it comes to comets; zero means the object is definitely natural while 10 means it's a technological object. At the time of his blog post, he put 3I/ATLAS at a six.

The physicist's idea has drawn a lot of speculation from astronomers who are still confident that 3I/ATLAS is a comet.

What has Grimes said?

Now Elon Musk's ex-partner Grimes, real name Claire Boucher, has shared her own unusual theory on it all.

Taking to Twitter on November 29, the singer penned: "My theory is 3i atlas is coming to check us out cuz we're so close to asi and perhaps when we achieve certain goals we get to join the alien federation of civilizations or else they need to check if we're mentally stable for such god like tech and if they need to eradicate us (in which case we shud be nicer)."

Grimes shared an unusual theory about the comet (Twitter)

But even she admitted that this idea was just a 'fantasy'.

Somebody replied to the post: "Realistically if they wanted to stay hidden all they'd have to do is paint the spaceship black, and if they want us to know they're coming all they need to do is blink a laser at us or change velocity in an unexpected way."

Grimes then responded: "Stop destroying my fantasies with ur realistic and informed takes."