Searching for Planet 9

Beyond the orbit of Neptune, in the frozen darkness of the Kuiper Belt, a phantom giant is hiding — Planet Nine. Astronomers from rival international teams race against time and each other, chasing gravitational ghosts revealed by the wobbling paths of distant dwarf worlds. This documentary captures the high-stakes pursuit, where supercomputers crunch celestial data and telescopes scan uncharted voids. It’s a detective story written in mathematics and starlight, asking profound questions about our solar system’s birth and the possibility of a hidden neighbor shaping our cosmic neighborhood from the shadows.