Asteroid Sample Brought to Earth Exposes Ryugu's Hidden Interior

Hayabusa2 returned from Ryugu with just a teaspoon’s worth of material, but it could be enough to study the entire asteroid.

is the first to describe the subsurface materials retrieved from Ryugu, an asteroid located 174,000 million miles from Earth. The scientists didn’t find anything spectacular—no alien biosignatures or exotic elements—

In an email, planetary scientist Shogo Tachibana from the University of Tokyo and the lead author of the new paper said the samples will inform future studies of asteroid Ryugu, both in terms of its composition and history. His team “aimed to determine the representativeness of the samples because, if they represent the asteroid surface, detailed analysis on [Earth] will lead to an understanding of the entire asteroid even though they were gathered from limited areas on the asteroid,” he wrote.

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