Mon Prof Augmenté
Dust That Grew Into Planets
Tiny rocks and dust in a young star’s disk bumped into each other. They stuck together and grew bigger and bigger until some became planets.
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Age 8: open this week
Browse Age 8
In the picture
- Dust grains touching and sticking
- A pebble made from clumped grains
- A boulder made from clumped pebbles
- A rounded rocky planet made from growing boulders
Examples
- A snowball grows as you roll it and more snow sticks.
- Bread crumbs clump into a ball when you press them together.
Key takeaways
- Small bits can stick together to make bigger bits.
- After many collisions, the biggest bodies become planets.
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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