TheSimplySpace on Youtube shows that the technical advances of recent years have not stopped at the field of astronomy. Gigantic discoveries such as the first photo of a black hole show that there are still numerous unexplored objects and phenomena in our universe. According to extrapolations by astrophysicists, there are probably as many as 100 billion galaxies in space and an equally large number of planets in the Milky Way alone, whose existence we have not yet learned of.
Some science out there is pseudoscience. The word pseudoscience is derived from the Greek root pseudo meaning false and the English word science, from the Latin word scientia, meaning "knowledge". Pseudoscience consists of statements, beliefs, or practices that claim to be both scientific and factual but are incompatible with the scientific method.
Some people may believe that a 9th planet exists in our solar system. Our solar system consists of our star, the Sun, and everything bound to it by gravity - the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune, dwarf planets such as Pluto, dozens of moons and millions of asteroids, comets and meteoroids.
Planet 9 (Nine) is a hypothetical planet in the outer region of the Solar System. Its gravitational effects could explain the unusual clustering of orbits for a group of extreme so-called trans-Neptunian objects (ETNOs), bodies beyond Neptune that orbit the Sun at distances averaging more than 250 times that of the Earth. These ETNOs tend to make their closest approaches to the Sun in one sector, and their orbits are similarly tilted. These alignments suggest that an undiscovered planet may be shepherding the orbits of the most distant known Solar System objects. Nonetheless, some astronomers indeed question the idea that the hypothetical planet exists and instead assert that the clustering of the ETNOs orbits is due to observing biases, resulting from the difficulty of discovering and tracking these objects during much of the year.
Based on earlier considerations, this hypothetical super-Earth-sized planet would have had a predicted mass of 5 to 10 times that of the Earth, and an elongated orbit 400 to 800 times as far from the Sun as the Earth. Konstantin Batygin and Michael E. Brown suggested that Planet Nine could be the core of a giant planet that was ejected from its original orbit by Jupiter during the genesis of the Solar System. Others proposed that the planet was captured from another star, was once a rogue planet, or that it formed on a distant orbit and was pulled into an eccentric orbit by a passing star.
The section of the universe, which humans can see, resembles a tiny puzzle piece, which is put together by researchers for centuries piece by piece. Not even the solar system known to us has been completely explored, as can be seen from the discovery of the possible dwarf planet Farout only two years ago or the discussion about a gas in the atmosphere of Venus that could indicate life. For several years, researchers have also speculated about the possibility of another planet in our solar system. Since Pluto's planetary status was revoked, eight have been counted among them. Newest research results from California let astronomy enthusiasts now again strongly listen: There is actually a mathematical proof for the ninth planet in our solar system!
In August 2006, the International Astronomical Union (IAU) downgraded the status of Pluto to that of "dwarf planet." This means that from now on only the rocky worlds of the inner Solar System and the gas giants of the outer system will be designated as planets.