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Planet Nine

space Maturity 11-13 Next article →

Many people think a hidden world exists in our solar system. We call this mystery object Planet Nine. It stays far away from the Sun. This world would be very far past the other planets. It sits in a very dark and cold place. Finding it would change what we know about space. Scientists want to solve this big mystery.

How do we know it might be there? We cannot see it with our eyes yet. Scientists look at how small objects move in space. These small objects move in strange ways. They think Planet Nine pulls on them. This pull is caused by gravity. Gravity is a force that pulls things together.

Researchers use math to find clues about this world. They look for patterns in the paths of small objects. These objects are far out in the dark. The math suggests a large object is causing the movement. No one has seen the planet itself yet. It remains a guess based on how things move.

We do not know the exact size of Planet Nine. It might be much bigger than Earth. It would be a very large world. It would be located very far from the Sun. Scientists are still searching for more clues. They use telescopes to look into the deep dark. They hope to find it very soon.

Think about how a magnet works. A magnet pulls on small metal bits. You cannot always see the pull happening. You only see the metal move. Planet Nine might work like a giant magnet. Its gravity pulls on small things in space. This is why scientists think it is real. It is a puzzle waiting to be found.

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