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Atom & Cosmos

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synestia illustration

PUFFED UP  Early in its development, a rocky planet may turn into a synestia (illustrated), a spinning disk of vaporized rock that looks like a jelly-filled doughnut with a small, solid core (gray).

telescope in Argentina

LYING IN WAIT  The New Horizons team spread 24 of these small telescopes around southern Argentina to catch a cosmic coincidence.

Ceres

MUDDY OCEAN?  The dwarf planet Ceres could have once been a ball of mud with a solid core, a new model suggests.

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