Psyche

ASTEROID · the metal world

SIZE about 220 kmMADE OF mostly iron and nickelVISITOR NASA's Psyche probe, arriving 2029

An asteroid made largely of metal, probably the exposed core of a baby planet that lost its rocky shell in ancient collisions. Visiting Psyche means looking at something we can never reach at home: a planetary core, naked in space. A NASA spacecraft of the same name is on its way and arrives in 2029.

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