The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many ...

From planets that rain diamonds to moons hiding underground oceans, the solar system is full of astonishing secrets. These 10 ...

Is the solar system full of interstellar vagrants, passing unseen? For decades, it was all conjecture, interrupted only by the brief glimpses of objects such as 1I/’Oumuamua and 2I/Borisov. But ...

Astronomers have picked up evidence of an Earth-sized world, distinct from the previously hypothesised Planet Nine and Planet ...

In March, May, and August 2023 the telescope spotted a potential object on the outskirts of our Solar System. Follow-up observations in July 2024 using the Canada-France-Hawaii Telescope confirmed ...

Over time, these newly condensed solids bind together, sowing the seeds for planet formation as they gain both size and mass. The first kilometer-sized planetesimals in the solar system, which ...

Weighing in at 0.6 solar mass, HOPS-315 should someday grow to become a star much like our own sun; this makes it a promising stand-in for studying the first stages of our solar system’s history. For ...

Astronomers have discovered a "fossil" body residing on the outskirts of the solar system, according to new research. The object – which goes by the formal designation 2023 KQ14 but is nicknamed ...