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https://www.scientificamerican.com/artic...d-it-soon/
New planet in our solar system? Scientists find hidden body 5-7 times size of Earth that orbits Sun in 20,000 years. Astronomers are searching for a potential ninth planet, known as Planet Nine, which could reshape our understanding of planetary systems. The search, initiated in 2014, suggests this unseen planet may be 5-7 times larger than Earth and influence nearby objects in the Kuiper Belt.

The search for Planet Nine began in 2014. Astronomers Scott Sheppard and Chadwick Trujillo observed unusual orbital patterns. These patterns were noticed in icy Kuiper Belt objects beyond Neptune. Scientists suggest these movements could indicate an unseen massive planet. The search for Planet Nine began in 2014. Astronomers Scott Sheppard and Chadwick Trujillo observed unusual orbital patterns. These patterns were noticed in icy Kuiper Belt objects beyond Neptune. Scientists suggest these movements could indicate an unseen massive planet.
https://www.scientificamerican.com/artic...d-it-soon/