Is there a hidden planet beyond Pluto? Scientists hope to spot a new member of solar system soon

The notion of a ninth planet gained momentum with the discovery of Sedna, a distant object with an unusual orbit that extends far beyond the Kuiper Belt. (Representative Image: Canva)

For generations, astronomers have been fascinated by the possibility of a mysterious planet lurking beyond Pluto in the outer reaches of our solar system. The search for the elusive "Planet Nine," a world shrouded in mystery and debate, may soon be resolved. Advances in technology and the launch of a cutting-edge observatory are expected to bring the hunt for this hidden planet to a decisive moment.

The Search Intensifies: Vera C. Rubin Observatory's Role
The idea of a planet beyond Pluto has gained traction due to the gravitational effects observed on smaller celestial bodies in the distant solar system. These anomalies suggest that a massive object may be influencing their orbits. Astronomers like Mike Brown, a leading proponent of the Planet Nine theory, believe that the Vera C. Rubin Observatory in Chile could finally provide the evidence needed. Brown, a professor at the California Institute of Technology, recently shared his optimism with Interesting Engineering, stating, "It is very possible that Planet Nine will be found within the first year of the Vera C. Rubin Observatory."

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The Rubin Observatory, currently under construction, is a marvel of modern astronomy. Once completed, it will house an eight-meter wide-field telescope and the largest digital camera ever built for optical astronomy. The observatory is designed to conduct a decade-long survey of the sky, generating an unprecedented 20 terabytes of data every night. This massive data collection effort will help scientists explore the universe's darkest corners and, potentially, uncover Planet Nine.

Vera C. Rubin Observatory under construction (Image: rubinobservatory.org)

Evidence Mounts: Sedna's Strange Orbit
The notion of a ninth planet gained momentum with the discovery of Sedna, a distant object with an unusual orbit that extends far beyond the Kuiper Belt. Sedna's eccentric path suggests that a larger, unseen body could be exerting a gravitational pull. Mike Brown, who co-discovered Sedna, explained that early hypotheses pointed to the influence of a star that passed close to the Sun during the solar system's infancy. However, the clustering of these distant objects' orbits has led many scientists to consider the existence of Planet Nine as a more plausible explanation.

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Despite the compelling evidence, the scientific community remains divided. Some researchers, like University of Regina astronomer Samantha Lawler, argue that the peculiar orbits of these distant objects could result from "observational bias." Lawler points out that it is easier to detect trans-Neptunian objects (TNOs) closer to the Sun, potentially skewing the data.

The Final Frontier: What Lies Beyond?
As the Vera C. Rubin Observatory prepares for its groundbreaking mission, the debate over Planet Nine's existence continues. While some scientists remain skeptical, others are hopeful that this new era of astronomical exploration will finally reveal the truth. Whether Planet Nine exists or not, the search itself promises to uncover new and unexpected wonders in the mysterious outer reaches of our solar system.

In the coming years, as the Rubin Observatory begins its sky survey, we may finally learn whether a hidden world lies beyond Pluto—or if the outer solar system holds other, even more surprising secrets.

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