All experiments
Space · Ages 6+
Planet Size Comparison
Which planet could swallow 1,300 Earths?
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What is this experiment about?
Slide across the solar system to see the Moon, Earth, Mars, Neptune, Saturn, Jupiter and the Sun drawn at true relative scale.
Questions kids ask
- What is the biggest planet?
- Jupiter is the largest planet in our solar system — more than 1,300 Earths could fit inside it.
- Is the Sun a planet?
- No, the Sun is a star, but it's so much bigger than every planet that it's useful to compare it too.
- How much bigger is Earth than the Moon?
- Earth is about four times wider than the Moon.
