Read, Watch or Listen

New research suggests the existence of a ninth planet in our solar system, dubbed "Planet Nine." Data from infrared surveys spanning 23 years indicate a Neptune-sized object with a 10,000-20,000-year orbit. Its faint light reflection and gravitational influence on the Kuiper Belt objects support this hypothesis. While further observation is needed to confirm its orbit, the findings, published in the Publications of the Astronomical Society of Australia, reignite the debate about our solar system's composition.

Prepared by Olivia Bennett and reviewed by editorial team.