Planet Nine will be discovered in the next decade. Here’s why. | Konstantin Batygin | Big Think

TL;DR

Researchers propose the existence of a ninth planet, dubbed Planet Nine, based on the clustering of orbits in the distant solar system and the presence of highly inclined objects in the inner solar system.

Transcript

KONSTANTIN BATYGIN: The whole story dates back to about 2014-2015 when we started, me and my close collaborator Mike Brown, started looking into this problem. We were inspired by the work of some other researchers, Chad Trujillo and Scott Sheppard, who pointed out that something weird was happening in the distant solar system. That there was this w... Read More

Key Insights

• 🥺 The discovery of the clustering of orbits in the Kuiper belt led to the development of the Planet Nine hypothesis.
• 🪐 Through dynamical analysis, researchers concluded that a distant gravitational source, likely an extra planet, is responsible for this arrangement.
• 🛰️ Evidence such as the flipping of distant orbits and the presence of highly inclined objects supports the existence of Planet Nine.
• 😚 Recent research suggests that Planet Nine may be smaller and closer than originally estimated.
• ✋ Despite the challenges in direct observation, confidence remains high that further evidence will emerge, confirming a ninth planet in our solar system.
• 🧩 The study of the solar system continues to reveal intriguing puzzles and unexpected findings.
• 🥺 The data analysis process has evolved with updated information, leading to refinements in the characteristics and location of the hypothesized Planet Nine.

Questions & Answers

Q: How did the discovery of the clustering of orbits in the Kuiper belt lead to the idea of Planet Nine?

The researchers observed a peculiar clustering of a particular orbital parameter, called The Argument of Perihelion, among asteroids beyond Neptune. This prompted them to investigate further and eventually propose the existence of Planet Nine as a gravitational source responsible for the arrangement.

Q: What evidence supports the existence of Planet Nine?

One piece of evidence is the flipping of distant solar system orbits, which should occur if Planet Nine is present. Additionally, highly inclined objects have been discovered in the inner solar system, as predicted by the Planet Nine hypothesis.

Q: What recent findings have emerged regarding the characteristics of Planet Nine?

Through updated data analysis, it is now believed that Planet Nine is smaller than initially estimated, with a mass closer to that of five Earths. Its orbital period is also thought to be around 10,000 years, rather than the previously assumed 20,000 years.

Q: Has Planet Nine been directly observed?

No, the direct observation of Planet Nine has proved challenging in recent years. However, the researcher remains optimistic that within the next decade, further evidence will surface to support the existence of a ninth planet.

Summary & Key Takeaways

• In 2014-2015, researchers Konstantin Batygin and Mike Brown noticed a clustering of a specific orbital parameter of asteroids beyond Neptune, leading them to investigate the Kuiper belt and its remarkable clustering of orbits.

• Through dynamical analysis, they concluded that the most plausible explanation for this arrangement is the presence of a distant gravitational source, which they hypothesize to be an extra planet.

• Subsequent research has revealed additional evidence supporting the existence of Planet Nine, including the flipping of distant orbits and the presence of highly inclined objects in the inner solar system.