Planet 9 Discussion In Our Solar System

This artistic rendering shows the distant view from Planet Nine back towards the sun. The planet is thought to be gaseous, similar to Uranus and Neptune. Hypothetical lightning lights up the night side Caltech/R. Hurt (IPAC)

There might well be an unknown planet hovering at the edges of our solar system, according to new analysis.

Scientists have been arguing for years about whether there is another planet lurking at the far edges of our solar system. That came to a head last year when scientists announce they had found evidence of the mysterious Planet 9 – and then continued when new research appeared to show those calculations were mistaken and the planet might not exist.

But the new work from the Complutense University of Madrid makes use of a new technique that indicates there's another planet lying beyond Pluto.