New research shows there is at least a 40% chance of the existence of Planet Nine, but scientists are still looking for definitive proof.

File photo: Artist's impression of the eight current planets of the solar system. In 2006, Pluto lost its erstwhile status as the solar system's ninth planet and was reclassified as a dwarf one.

Artist's impression of Planet Nine – a suspected “wide-orbit” planet – with the Sun in the distance; Neptune's orbit is shown ...

Computer simulations show that planets could be flung out of the inner solar system, supporting the possible existence of a ...

Planet Nine is a hypothetical planet, first theorised by astronomers from California Institute of Technology (Caltech) back in 2016. Said to have a mass about five to 10 times that of Earth, this ...

But even if it doesn't spot Planet 9 directly, the Rubin Observatory might find some more minor planets, ones whose orbits might be affected by Planet 9. And that could provide additional evidence ...

Rare photo said to capture all planets including Earth at once — for the first time ever: ‘Very tricky’ By . David Landsel. Published Feb. 26, 2025, 8:28 p.m. ET.

A stunning photo taken in Somerset has showed every single planet in the solar system at the same time during a rare alignment that won't happen again until 2040.

A powerful new observatory is the best hope yet for finding the elusive Planet 9, a large planet that some scientists say is hidden in our solar system. Search Query Show Search. HOME.