Have you ever wondered what our solar system looked like 3.8 billion years ago? Were the planets we know today anything like ...

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

Centimeter-sized pebbles have been detected in protoplanetary discs using e‑MERLIN, filling in a critical phase of planet ...

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

Captured just days after its discovery, the images offer the clearest view yet of this rare visitor from beyond our solar system.

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

Astronomers have confirmed the third interstellar object on record is dashing through our solar system. Dubbed 3I/ATLAS, it ...

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.

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.

Astronomers have spotted a new interstellar object — the third of its kind ever seen — shooting towards us through the solar ...

Astronomers have been given the rare opportunity to study an extrasolar object after the recent discovery of the interstellar ...