Planet Nine - Wikipedia
Astronomers Konstantin Batygin and Michael Brown have suggested that Planet Nine may be the core of a giant planet that was ejected from its original orbit by Jupiter during the genesis of the Solar …
Caltech Researchers Find Evidence of a Real Ninth Planet
Feb 19, 2026 · Caltech researchers have found evidence of a giant planet tracing a bizarre, highly elongated orbit in the outer solar system.
Planet Nine: Scientists map its likely location - EarthSky
Aug 27, 2021 · They estimate Planet Nine to be about 6.2 Earth masses, with an orbit that takes it from 300 astronomical units (AU, with 1 AU being the distance from Earth to the sun) out to 380 AU from …
Evidence of controversial Planet 9 uncovered in sky surveys taken 23 ...
May 1, 2025 · Planet Nine is a hypothesized massive planet, first proposed in 2014, that is speculated to orbit far out in the solar system. It has not been detected formally. Instead, astronomers have...
Planet 9 location, orbit, distance, name, and black hole ... - Inverse
Feb 20, 2024 · Astronomers are on the hunt for a giant planet in our outer Solar System. Here's everything we know about Planet 9, from orbit and location to whether it's a black hole.
Evidence of Planet 9 in IRAS and AKARI surveys | BBC Sky at Night …
Jul 3, 2025 · This hypothetical Planet 9, probably similar to Neptune, has been calculated to be on an elliptical orbit coming to around 300 Astronomical Units (1 AU is the Earth–Sun distance). However, …
A 9th planet in our solar system? Jury’s out, but a candidate has ...
May 6, 2025 · According to his models, to explain the clustering and movement of other objects in the Kuiper belt, Planet 9 would need an orbit tilted roughly 15 to 10 degrees from the plane of the solar...
Planet Nine | Definition, Characteristics, Search, & Facts - Britannica
Jan 23, 2026 · As of 2024, Planet Nine has not been found. Both large-scale surveys of the entire sky and target searches have been used to look for it. However, the planet would be difficult to detect …
PLANET NINE — Konstantin Batygin | CALTECH
Furthermore, in Batygin & Brown (2021), we demonstrated how Planet Nine’s gravity can “unfreeze” the orbits of Inner Oort Cloud objects, and re-inject them into the outer solar system, mixing them with …
Where Is Planet Nine? Its Hiding Places Are Running Out
Apr 15, 2024 · More likely, it formed closer in to the sun, and an unseen planetary mass farther out—Planet Nine?—pulled it into its current orbit.