Documentary ‘Scientific Sensations. Mysteries of Planet X’ about the mysterious ninth planet, the existence of which may explain the current arrangement of planets in the solar system. Scientists-astronomers will tell how it is searched for, what sizes it theoretically can have and why we do not see the planet X in telescopes. 

Transneptunian objects - bodies located beyond the orbit of Neptune - have been discovered by scientists relatively recently, as soon as technology allowed it. What other discoveries should we expect in this area of science in the near future and why should we, in general, look so far? Let's find out together with Alexei Semikhatov. Our guest is Vladislav Zubko, a member of the Department of Space Dynamics and Mathematical Information Processing at the Institute of Cosmic Dynamics of the Russian Academy of Sciences.