It would be understandable if you stopped thinking as much about Pluto after it was “demoted” from being considered one of the nine planets sharing the Earth’s solar system to being classified as a ...

Gas giants possibly developed slowly in the solar system. They developed cores layer by layer within a disk of ice and dust ...

With this new survey, astronomers have gained a peek inside a stage of exoplanet system formation they have yet to fully ...

The fourth planet in the system is a rocky world, while the second and third ones are gas planets.

Scientists have identified a rocky outer planet in a system where a gas giant was expected. The discovery challenges ...

A planetary system 116 light-years from Earth has a peculiar pattern. It could flip the script on how planets form, scientists say.

On Earth, you can look up at night and see the Moon shining bright from hundreds of thousands of miles away. But if you went to Venus, that wouldn’t be the case. Not every planet has a moon – so why ...

General relativity helps explain the lack of planets around tight binary stars by driving orbital resonances that eject or destroy close-in worlds. This process naturally creates a “desert” of ...

Our solar system officially houses eight planets, but some scientists say there could be a ninth. And that’s not just Pluto aficionados – evidence suggests a huge undiscovered world lurks on the dark ...

Astronomers have discovered a planetary system that appears to flip one of astronomy's most reliable rules on its head.

It was almost 100 years ago that Clyde W. Tombaugh discovered Pluto. That was the last planet found until 1992, when humans found another one. But this new planet wasn't in our solar system—it was ...

The UK government is to slash by 30 percent its funding for astronomy, particle and nuclear physics in a move branded as ...