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• In the continued search for the hypothetical ninth planet in our Solar System, Michael Brown, the CalTech astronomer who led the demotion of Pluto to a dwarf planet in 2006, has co-written a new study that claims to have narrowed the region the potential new planet could be located.

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• The study proposes "Planet Nine" exists beyond Neptune and is six times the mass of Earth.
• The new study also includes a "treasure map" of the planet’s likely orbit that the scientists said lasts around 7,400 Earth years and is closer to the Sun than the 2016 study found.
• A closer orbit to the Sun would make the planet brighter and easier to see.
• Planet Nine would probably be cold gas giant like Neptune, the farthest known planet in a Solar System from the Sun.
• Neptune has a nonsolid surface made up mostly of hydrogen, helium, and methane, according to NASA.

https://indianexpress.com/article/explained/how-researchers-found-where-to-look-for-planet-nine-7518541/

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