What counts as a moon? Huge ‘exosatellite’ sparks debate

Nature, Published online: 22 July 2026; doi:10.1038/d41586-026-02299-6Discovery of a distant Jupiter-mass object could pave the way for detection of exomoons — plus, a rare transmissible cancer found in catfish.

SINSIN
Jul 24, 2026 - 01:00
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What counts as a moon? Huge ‘exosatellite’ sparks debate

Nature, Published online: 22 July 2026; doi:10.1038/d41586-026-02299-6Discovery of a distant Jupiter-mass object could pave the way for detection of exomoons — plus, a rare transmissible cancer found in catfish.

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