Interstellar comet 3I/ATLAS is carrying chemical signatures that do not match anything formed in our solar system.

Our solar system has had some really rare visitors. Oumuamua was the first known interstellar object to zip through our solar ...

Comet 3I/ATLAS arrived from beyond the Solar System carrying a chemical story unlike anything astronomers had measured before. In the gas around it, they found isotope ratios that do not match the ...

China’s Tianwen-1 orbiter captured a faint but remarkable view of 3I/ATLAS as the interstellar comet raced past Mars. The ...

One year ago, on July 1 2025, astronomers discovered a fascinating new object moving through the Solar System. Detected by the Asteroid Terrestrial-impact Last Alert System (ATLAS), the object was ...

Since the dawn of the solar system, rocky visitors from deep space have blazed across Earth's skies. But the question remains: when will the next interstellar object appear in our solar system? An ...

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar System and is unlike anything ever before seen in our cosmic backyard, ...

The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space telescopes and orbiters have been documenting the rare visit. A mysterious ...

Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents preserved fragment of ancient planetary system ...

The interstellar comet 3I/ATLAS seen July 21, 2025 when it was 277 million miles from Earth – Copyright AFP Daphné LEMELIN An interstellar comet that blazed past ...