This would place Planet Nine between 37,182,323,000 miles and 74,364,646,000 miles from the Sun.
In their study, the authors wrote: “This paper reviews the observational motivation, dynamical constraints, and prospects for detection of this proposed object known as Planet Nine.”
US space agency NASA has also shown interest in the Planet Nine theory, sometimes referring to it in the past as Planet X.
READ MORE: ‘Alien’ signal from deep space DECIPHERED by astronomers
Article source: https://www.express.co.uk/news/science/1098245/Planet-nine-proof-nasa-evidence-planet-x-discovery-space-news