Evidence for a hidden ‘Planet Nine’ beyond Neptune has weakened

'Farfarout' is most distant object in our solar system. But it's not Planet Nine.

Astronomers have found evidence that it rains diamonds on Neptune and Uranus, that Mars' ancient water created opals, and that some exoplanets have clouds full of rubies and sapphires.

Neptune-Sized Exoplanet Discovered in Binary System NGTS-14