The origin of the differing tilts in the orbits of the planets in our solar system may have been revealed through the ...

Astronomers propose a new hypothetical planet, Planet Y, beyond Neptune, based on observed orbital anomalies in the Kuiper ...

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

In a groundbreaking study, astronomers describe the strange atmosphere of a Neptune-like exoplanet more than 400 light years away. The discovery could yield vital clues about our own solar system.

For the first 650 million years of the solar system Neptune was closer to the sun than Uranus a that’s 15% of the history of the solar system. It looked completely different than we see it today.” ...

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 ...