Interstellar object ‘Oumuamua covered in 'thick crust of carbon-rich gunk': Cigar-shaped body has a deep surface layer made of organic ices baked in interstellar radiation – and potentially has ice in its heart, say astronomers in a new article in Nature Astronomy today.

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Interstellar object ‘Oumuamua covered in 'thick crust of carbon-rich gunk': Cigar-shaped body has a deep surface layer made of organic ices baked in interstellar radiation – and potentially has ice in its heart, say astronomers in a new article in Nature Astronomy today.