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It's a meteorite.
This one is a "chondrite" meteorite, because it contains "chondrules."
At the beginning of the Solar system, dust particles were orbiting around our primitive Sun.
Gradually these particles clumped together to form small rounded granules. These granules are called chondrules.
Some granules continued to grow in size and eventually became asteroids.
Chondrite meteorites come from these asteroids.
Other bodies continued to clump together until they formed planets!
intermediate zone