Scientists detect alcohol on interstellar comet 3I/ATLAS. The strange discovery could reveal secrets about alien solar systems and cosmic chemistry.

Some of the most revealing objects in the solar system do not belong to it. Comet 3I/ATLAS, only the third confirmed interstellar visitor ever identified, has become a test case for how modern ...

How different can a comet be when it formed around another star? For 3I/ATLAS, the answer is already reshaping how astronomers think about small icy bodies that drift between stellar systems. Only two ...

Asteroids are some of the oldest objects in the solar system: leftovers from the chaotic time when planets were assembling ...

In 2022, NASA made history, deliberately smashing a spacecraft into an asteroid to see if it could alter the object's orbit around its larger companion asteroid. We already knew that the Double ...

The interstellar comet 3I/ATLAS is leaving our solar system. See new photos from the a European Space Agency orbiter on its ...

The horizontal coordinate system uses two angles: altitude (or elevation) and azimuth, relative to the observer’s horizon, to locate the celestial object in three-dimensional space. This method is ...

The interstellar comet 3I/ATLAS was confirmed in July 2025 as the third known object to visit our solar system from interstellar space. Despite conspiracy theories, scientists say 3I/ATLAS shows all ...

The interstellar comet 3I/ATLAS is leaving our solar system. See new photos from a European Space Agency orbiter on its way to Jupiter.

"For asteroids of the size scale relevant to planetary defense (i.e., ∼50-500 m), the mass can only be directly measured ...