Watch Out! UN on Alert as ‘Alien’ Visitor 3I/ATLAS Set to Brush Past Earth Soon

A new interstellar object named 3I/ATLAS - an object that entered our Solar System from outside - has caught the attention of scientists worldwide.

The International Asteroid Warning Network (IAWN), a United Nations-endorsed group that tracks space objects which might threaten Earth, has announced a special global observing campaign for this comet-like object. Under this project astronomers around the world will watch and collect data on this mysterious object at the same time.

What's the Campaign About?:

IAWN says comets are tricky to study because their glowing gas clouds and tails make it hard to pinpoint their exact position in space.

To improve how astronomers measure and predict comet paths, IAWN will run a campaign from November 27, 2025, to January 27, 2026 - focusing on 3I/ATLAS.

Astronomers who want to take part must first join a workshop before November 7, 2025.

Why All the Buzz Around 3I/ATLAS?:

A group of scientists - including Harvard's Avi Loeb - had already warned that we should pay close attention to interstellar objects like this.

They say such objects might, in rare cases, even carry alien technology - and we should be prepared for any "black swan" (Means a rare, unpredictable event with huge impact - something that's very unlikely but can change everything if it happens, Ex: Covid 19) events.

According to Loeb, 3I/ATLAS has shown eight strange features that make it very unusual compared to normal comets:

1. Unusual Orbit: Its path is almost perfectly aligned with the planets' orbits - very unlikely to happen by chance.

2. Sunward Jet: It has a jet of material pointing toward the Sun - the opposite of what's expected for comets.

3. Massive Size: It's far heavier and faster than the previous interstellar visitors - 'Oumuamua and Borisov.

4. Precise Timing: It passed close to Mars, Venus, and Jupiter in a way that seems finely tuned.

5. Metal Clues: Its gas cloud has lots of nickel, more than iron - something usually seen in human-made alloys.

6. Low Water Content: Only about 4% water - most comets are mainly made of water.

7. Strange Light Reflection: It reflects light in a way no other comet has ever shown.

8. Coincidence with "Wow! Signal": It came from the same general direction as the famous unexplained radio signal detected in 1977.

When all these odds are multiplied, Loeb says the chances of this happening naturally are incredibly small - about one in ten quadrillion (10¹⁶).

Could We Study It Up Close?:

Sadly, no spacecraft is currently in a position to intercept 3I/ATLAS.

However, Loeb and his colleagues calculated that NASA's Juno spacecraft (near Jupiter) could have reached it if it still had enough fuel - and even a U.S. Congresswoman wrote to NASA suggesting they try.

What's Next?:

The most interesting moment will come around October 29, 2025, when 3I/ATLAS passes closest to the Sun.

If it's a technological object - like a possible alien probe - scientists expect it could show a sudden maneuver or release smaller objects near that time, using the Sun's energy to slingshot them around the Solar System.

Loeb's Galileo Project team is already preparing to monitor for any unusual activity near Earth afterward.

Loeb says "By the end of this week, it will come within 29 million kilometers from Mars," says Loeb. "There are several orbiters there that were deposited there by NASA, by the European Space Agency, by the Chinese Space Agency, and we will get much more information about it."

Loeb acknowledged scientists will hopefully get an image with a 30-kilometer pixel size, and examine the brightest pixel to infer how big the object is

New data from the International Gemini Observatory revealed the object has grown in its estimated size, with it now weighing more than 33 billion tons.

Closest to Earth on Dec 19:

3I/ATLAS will pass closest to Earth on December 19, 2025

By Christmas, scientists hope to have a clearer idea whether it's just another odd comet - or something far more intriguing from beyond our Solar System.