Imagine a planet like Earth, where it's just right, not too hot, not too cold. That’s what makes it 'alive'. But if a planet is too close to its star, it gets too hot, and all the water disappears. If it's too far away, it freezes over. That makes it ‘dead’.
Examples
- A planet too close to its star is like a pizza that's been in the oven too long, everything burns up.
- A planet too far from its star is like a frozen soda can, nothing moves or changes.
- Earth is just right, like a perfectly cooked steak, not too hot, not too cold.
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See also
- What Makes a Planet Habitable?
- What Is the Difference Between a Planet and a Star?
- How Do Stars Differ from Planets?
- How Does the ‘Solar System’ Stay in Balance?
- What Makes a Planet 'Gaseous' or 'Solid'?
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