The asteroid belt is classically considered the domain of rocky bodies, being too close to the Sun for ice to survive. Or so we thought — not only is ice present, but at least one asteroid is covered in it.
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Hsieh, H. A frosty finding. Nature 464, 1286–1287 (2010). https://doi.org/10.1038/4641286a
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DOI: https://doi.org/10.1038/4641286a
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