Comet 3I/ATLAS has arrived as the third confirmed visitor from interstellar space, and it is not behaving the way a quiet chunk of ice and rock is supposed to. As astronomers track its path through ...

A comet tearing through the inner solar system at roughly 58 kilometers per second formed between 10 and 12 billion years ago, according to isotopic measurements published this year. That would make ...

Those concerned that 3I/ATLAS' arrival to our solar system meant that some sort of alien invasion was imminent can breathe a sigh of relief. Echoing what NASA officials have long said, a team of ...

Astronomers and space agencies worldwide are closely monitoring 3I/ATLAS, a rare interstellar object passing through the Solar System. The object was discovered on 1 July 2025 by the Asteroid ...

NASA’s Europa Clipper spacecraft has captured images of interstellar comet 3I/ATLAS as the object — perhaps the oldest ever seen by astronomers — whizzes through the inner solar system. On Nov. 6, ...

Remember 3I/ATLAS? Yes, the interstellar comet that made plenty of headlines in 2025 is still romping through our solar system. But it may not be around much longer. The otherworldly visitor to ...

The interstellar comet 3I/ATLAS was the third object ever discovered in our solar system that originated from another star system. Despite a viral conspiracy theory, NASA officials have repeatedly ...

Astronomers analyzed the vapors coming off the comet when it neared the sun and found it had a lot of "heavy" water. That hints it grew up in a frigid planetary system, possibly before its home star f ...