Railway Recruitment Board General Awareness — Question 1586
Question
In astronomy, what is 'Planet Nine'?
- A hypothesised large planet in the outer Solar System
- A newly discovered moon of Saturn
- The former name of Pluto
- A large asteroid in the Kuiper Belt
Correct answer
A — A hypothesised large planet in the outer Solar System
Explanation (English)
Planet Nine is a hypothesised large planet proposed to orbit in the far outer Solar System.
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