An interstellar trespasser known as 3I/ATLAS is almost certainly a comet. So, why do so many people think it's ...

It can be challenging to quantify how much of a danger space debris poses. The International Civil Aviation Organization ...

A comet known as 3I/ATLAS made news earlier in July when it was confirmed to have originated outside of Earth's solar system. But is 3I/ATLAS definitely an icy comet? A trio of researchers that most ...

An interstellar trespasser known as 3I/ATLAS is almost certainly a comet. So, why do so many people think it's ...

The object, initially thought to be a meteorite, could actually be Zond 1, a Soviet spacecraft that was destined for Venus 60 ...

Harvard physicist Avi Loeb has drawn attention for his take on the interstellar object 3I/ATLAS, which was officially observed on July 1, 2025. According to NASA, “comet” 3I/ATLAS is the “third known ...

If it is a galaxy, it would be the oldest known galaxy in the cosmos, but it could also be a brown dwarf or an early black hole.