Science post alert! Planet Nine is a hypothetical planet beyond Neptune in our solar system. It is believed to be a super-Earth-sized planetary body with a mass about 5 to 10 times that of Earth.
The existence of Planet Nine was proposed to explain peculiarities observed in the orbits of some trans-Neptunian objects (TNOs), which are objects that orbit the Sun beyond Neptune. These TNOs exhibit unexpected clustering and alignment in their orbits, suggesting the gravitational influence of a large, distant planetary body.
While Planet Nine has not been directly observed yet, its potential existence is supported by computer simulations and modeling of the outer solar system’s dynamics. Astronomers continue to search for this elusive planetary body through telescopic surveys and analysis of orbital data from TNOs.
