Researchers suspect that two meteorites found in the Sahara Desert in 2023 may originally have come from Mercury, which would ...

Scientists now say an interstellar comet discovered earlier this month could be one of the oldest that astronomers have ever ...

The astronomical community is abuzz over a newly discovered "interstellar object," only the third of its kind ever seen, ...

I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, ...

A fascinating glimpse into how a solar system like our own is born has been revealed with the detection of planet-forming ...

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system.

Solar System Planets. Astronomy articles on the eight planets, plus the two dwarf planets, Pluto and Eris. Great pictures of everything in the solar system. Updated daily.

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

All eyes are on Comet 3I/ATLAS as astronomers worldwide chase the exotic ice ball through our solar system ...

I/ATLAS might be over 7 billion years old, a new study reports, which would make it the oldest comet known. But experts caution we need more data.

Researchers from the Nanjing Institute of Geology and Paleontology of the Chinese Academy of Sciences and Columbia University ...