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1️⃣ Theia is not a planet we can see today

• A long time ago, when Earth was very young, there was another planet called Theia.
• Theia was about the size of Mars.

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2️⃣ Theia crashed into Earth

• Scientists think Theia collided with Earth billions of years ago.
• This was a giant crash—not something that happens today.

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3️⃣ The Moon was born

• The crash threw pieces of Earth and Theia into space.
• These pieces joined together and formed the Moon.
• So, the Moon is kind of made from Earth + Theia.

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4️⃣ Easy way to remember

• Earth + Theia crash → Moon is made!
• Think of it like baking cookies: you mix ingredients, and a new cookie is formed.

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5️⃣ Fun fact

• Theia is named after a Greek goddess of sight and the moon.
• Scientists call it a “giant impactor” because it hit Earth with a huge impact.

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