How Do Planets Form? | We Asked a NASA Expert
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How Do Planets Form? | We Asked a NASA Expert
How do planets form? After a star is born, leftover material forms a spinning disk around it. Within that disk, tiny particles of dust collide and gradually grow into larger and larger objects called planetesimals. These are the building blocks of planets. Over time, these planetesimals combine to form the worlds we see today, from rocky ...
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