Planetary scientists have presented the theory of ‘Planet 9’ after noticing that something was exerting a gravitational force on objects in the Kuiper Belt – an area of comets, the dwarf planet Pluto and huge icy objects beyond Neptune that encircles the whole solar system.


In this TEDx talk, professor of physics, Dr. Renu Malhotra talks about the search for the hypothesized 9th planet in our Solar System.