The Sun looks like a small glowing circle in our sky. But it is really, really enormous — and our Earth is tiny next to it!
In this lesson you'll discover:
⭐ how many Earths fit across the Sun • ⭐ how many fit inside • ⭐ why the Sun still looks small to us
Tap Next to begin your space adventure 🚀
Here are the Sun and the Earth shown at their real size next to each other. Tap each one to learn what it is!
The little blue dot really is Earth, drawn to scale beside the Sun.
Scientists have measured both worlds. Tap each card to flip it and reveal the surprise!
Across = lined up edge to edge. Inside = filling up the whole ball like marbles in a jar.
Imagine placing Earths in a row across the middle of the Sun. How many would fit? Slide to your guess, then press the button.
My guess: 50 Earths
Hint: the real answer is more than 100 but less than 120!
Tap the + Add Earths button to drop little Earths inside the Sun. Watch how many it takes — even when the Sun looks "full" of dots, the real answer is way bigger!
If the Sun is such a giant, why does it look like a little coin in our sky? Pick the best answer:
Here's what you now know about the Sun and Earth:
Next time you see the Sun, remember — that little glow is really a colossal ball of fire! ☀️🚀