Is there a Planet Nine beyond Neptune? Mapping the solar system’s hidden worlds
13 Nov 2025 | Category: Science
Nearly a century after Pluto’s discovery, astronomers are still hunting for mysterious planets beyond Neptune - including a possible giant that’s never been seen.
The edge of the solar system
Neptune, discovered in 1846, is the last of the classical planets. But beyond its orbit lies a vast, icy frontier called the Kuiper Belt, a region teeming with frozen remnants from the birth of the solar system. These obj...
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