While the comet's precise point of origin remains unclear, the NASA scientists said they believe it hails from a solar system older than our own, which formed about 4.5 billion years ago.

Scientists debunk alien claims about interstellar comet 3I/Atlas, explaining its rare chemistry, deep-space age, and high speed as it passes through the Solar System.

Uncover the secrets of Comet 3I/ATLAS, the rare interstellar visitor of 2025. Learn its alien origins, ancient chemistry, and ...

Billions of years ago, while the solar system was still young, a massive object may have drifted into it. It's not a spaceship, but it is an alien visitor in its own right—a colossal interstellar body ...

Now, researchers from the Harvard Smithsonian Center for Astrophysics have revived the idea that 'Oumuamua could be an alien spacecraft. While we've recategorized 'Oumuamua a few times, we can say ...

From our limited observation time, astronomers have determined ‘Oumuamua is a small cigar-shaped object, but we didn't know exactly how small until now. Share on Facebook (opens in a new window) Share ...