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Hubble finds evidence of water vapor at Jupiter's moon Ganymede

Posted: 26 Jul 2021 10:21 AM PDT

Astronomers have uncovered evidence of water vapor in the atmosphere of Jupiter's moon Ganymede. This water vapor forms when ice from the moon's surface sublimates -- that is, turns from solid to gas. Astronomers re-examined Hubble observations from the last two decades to find this evidence of water vapor.