The debate over the existence of Planet Nine has been ongoing for nearly a decade. First proposed in 2016 by astronomers Mike Brown and Konstantin Batygin
These objects, known as Trans-Neptunian Objects (TNOs), show strange orbital alignments that are difficult to explain without a gravitational force from a large planet.
While some astronomers believe Planet Nine is the best explanation for these unusual orbits, others remain skeptical. The alternative explanations range from the existence of an undiscovered small black hole to possible biases in observations.
Despite the indirect evidence, such as the unusual movements of objects like Sedna, a definitive discovery has yet to be made.
The challenge of directly observing Planet Nine is immense. It's thought to be about 500 astronomical units away from the Sun, making it extremely distant and faint, which complicates efforts to spot it with current technology.
Future observatories, such as the Vera Rubin Observatory in Chile, are expected to provide better tools to search for this elusive planet, but for now, astronomers continue to puzzle over whether it truly exists
Mike Brown and Konstantin Batygin, the theory suggests a massive, unseen planet beyond Neptune may be influencing the orbits of distant objects in the solar system.