Does Distant Planet Host Volcanic Moon Like Jupiter’s Io?

The existence of a moon located outside our solar system has never been confirmed but a new NASA-led study may provide indirect evidence for one. New research done at NASAs Jet Propulsion Laboratory reveals potential signs of a rocky, volcanic moon orbiting an exoplanet 635 light-years from Earth. The biggest clue is a sodium cloud 8230;. https://www.nasa.gov/unive...
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