Mon Prof Augmenté
The Goldilocks Zone
Age 8 · Astronomy
Liquid water needs a planet that is not too close and not too far from its star. Only at the right distance can oceans stay as liquid water.
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Age 8: open this week
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In the picture
- Planet too close to the star: water boils into steam
- Planet at the right distance: water stays liquid in oceans
- Planet too far from the star: water freezes into ice
Examples
- A pot on a very hot stove: the water boils away as steam.
- A puddle on a freezing winter day: the water turns into ice.
Key takeaways
- Liquid water needs the right distance from a star.
- Too close means boiling, too far means freezing.
Quiz: The Goldilocks Zone (Age 8)
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What does a planet need so that its oceans can stay liquid water?
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What happens to the water on a planet that is too close to its star?
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What happens to the water on a planet that is too far from its star?
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