Mon Prof Augmenté
One star among many
The Sun is a star, and it is only one of a huge number of stars. Those stars are gathered into a galaxy, and the universe holds a great many galaxies.
This picture is part of the full library
Every lesson is open to everyone for 7 days after it is published. This one came out on September 18, 2026: its text stays readable here, and its picture opens with a subscription.
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Age 9: open this week
Browse Age 9
In the picture
- A small yellow star with a thin ring around it: our Sun
- The dense, bright middle of the spiral: the heart of our galaxy
- A faint oval cloud far beyond the galaxy’s edge: another galaxy
Examples
- One grain of sand on a whole beach.
- One tree in a forest that stretches over many hills.
Key takeaways
- The Sun is a star, not the only one.
- Stars group into galaxies, and galaxies fill the universe.
Carry on in the app
Three questions on this lesson. It has left the free week, so its quiz is for subscribers.
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