A newly discovered ice comet from deep space may be over 7 billion years old, making it the most ancient comet scientists ...

A mystery interstellar object discovered last week is likely to be the oldest comet ever seen—possibly predating our solar ...

The object, which measured 115 metres long, 364 metres wide, and 19 metres depth, was subsequently confirmed as the first body to have come from a planetary system beyond our own. Oumaumua, (which ...

The interstellar object has been named 3I/Atlas by the International Astronomical Union’s Minor Planet Center.

Astronomers are scrambling to gather data on a mysterious object that’s currently hurtling through the solar system.

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

The third object known to have entered the Solar System from interstellar space has an origin unlike either of its ...

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.

An "interstellar object" is speeding toward the inner solar system, where Earth is located, astronomers have confirmed.

A new interstellar object, A11pl3Z, has been discovered in our solar system, marking the third such object to be observed. It ...

37,000 trans-Neptunian objects, residents of the distant Kuiper Belt — nearly 10 times the current census — shedding light on Neptune’s past migration and the outer solar system’s history.

Predictions of the LSST Solar System Yield: Near-Earth Objects, Main Belt Asteroids, Jupiter Trojans, and Trans-Neptunian Objects. The Astronomical Journal (submitted to arXiv) , 2025 DOI: 10.3847 ...