Mysterious Interstellar Object 3I/ATLAS Sparks Alien Spacecraft Debate

A newly discovered interstellar object has sparked debate among astronomers. Named 3I/ATLAS, it was first spotted on July 1, 2025, and is moving at an extraordinary speed—nearly 60 kilometres per second. Harvard astrophysicist Avi Loeb is now examining whether it could be an artificial spacecraft rather than a natural comet.

The object made its closest pass by Earth on December 19, 2025. Images reveal a glowing, misty cloud surrounding it, along with a narrow, laser-like jet pointing toward the Sun. Scientists remain unsure whether this jet is engine exhaust or simply natural outgassing from the comet's interior.

Loeb and his co-author, Mauro Barbieri, have called for further observations. They highlight a key opportunity on January 22, 2026, when 3I/ATLAS will align with Earth and the Sun. This alignment could provide clearer data about its origins.

One intriguing theory suggests 3I/ATLAS might eventually enter orbit around Jupiter. If it does, Loeb speculates it could deploy a research probe into the planet's orbit. Confirmation of its artificial nature would likely come if such a manoeuvre occurs.

The object's unusual speed and behaviour set it apart from typical comets. If confirmed as a spacecraft, it would mark a historic discovery in interstellar exploration. Until then, astronomers continue to monitor its trajectory and characteristics.