BBC Sky at Night

EXPLAINER

What space rocks tell us about the Solar System

Penny Wozniakiewicz looks at how samples from other worlds are analysed by scientists

During the early hours of 6 December 2020, JAXA’s Hayabusa2 sample return capsule re-entered Earth’s atmosphere, streaking across the sky above Southern Australia and landing in the Woomera Test Range. Scientists around the globe were eager to see the precious cargo it carried – samples from asteroid 162173 Ryugu, a C-type or carbonaceous asteroid. C-type asteroids contain large quantities of

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