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Hubble Finds Evidence of Water Vapor at Jupiter’s Moon Ganymede

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Astronomers have used new and archival datasets from NASA’s Hubble Space Telescope to uncover evidence of water vapor in the atmosphere of Jupiter’s moon Ganymede.

The vapor is present due to the thermal excitation of water molecules from the moon’s icy surface.

Previous research has offered circumstantial evidence for the moon containing more water than all of Earth's oceans. However, temperatures there are so cold that water on the surface freezes and the ocean lies roughly 100 miles below the crust.

For more information, visit https://nasa.gov/hubble.

Credit: NASA's Goddard Space Flight Center
Paul Morris: Lead Producer
Andrea Gianopoulos: Science Writer
Tracy Vogel: Science Writer


Additional Credits:
Artist’s Impression of Ganymede: Credit: ESA/Hubble, M. Garlick

Artist’s Impression of a Sublimated Water Atmosphere on Ganymede: Credit: ESA/Hubble, J. daSilva

NASA’s Juno Spacecraft Observation of Ganymede in June 2021

Video Artist’s Impression of Ganymede: Credit: ESA/Hubble, M. Garlick

Ganymede Spinning Globe: Credit: USGS Astrogeology Science Center


Music Credits:
"Mysterious Discoveries" by Bertrand Allagnat [SACEM] via Koka Media [SACEM], Universal Production Music France [SACEM], and Universal Production Music.

This video can be freely shared and downloaded at https://svs.gsfc.nasa.gov/13892 . While the video in its entirety can be shared without permission, individual imagery provided by ESA (the European Space Agency) is obtained through permission. Their own media guidelines must be adhered to in its use. The music and some individual imagery may have been obtained through permission and may not be excised or remixed in other products. Specific details on such imagery may be found here: https://svs.gsfc.nasa.gov/13892 . For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html.


See more Hubble videos on YouTube: https://www.youtube.com/playlist?list=PLiuUQ9asub3Ta8mqP5LNiOhOygRzue8kN

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